Define remote path with abra app new

This PR routes a request from

abra app new <git-url>

to add a RECIPE= line to the .env file. Like this,
if the abra configuration is on git, and used in other
places, also remote recipes get correctly updated.

Dockerfile

@@ -15,7 +15,7 @@ WORKDIR /app
 
 RUN CGO_ENABLED=0 make build
 
-FROM alpine:3.22
+FROM alpine:3.23
 
 RUN apk add --no-cache \
   ca-certificates \

Makefile

@@ -1,5 +1,5 @@
 ABRA         := ./cmd/abra
-XGETTEXT     := ./bin/xgettext-go
+XGETTEXT     := xgettext-go
 COMMIT       := $(shell git rev-list -1 HEAD)
 GOPATH       := $(shell go env GOPATH)
 GOVERSION    := 1.26
@@ -62,8 +62,8 @@ update-po:
 	done
 
 .PHONY: update-pot
-update-pot: $(XGETTEXT)
-	@${XGETTEXT} \
+update-pot: xgettext-go
+	@$(XGETTEXT) \
 		-o pkg/i18n/locales/$(DOMAIN).pot \
 		--keyword=i18n.G \
 		--keyword-ctx=i18n.GC \
@@ -71,10 +71,10 @@ update-pot: $(XGETTEXT)
 		--add-comments-tag="translators" \
 		$$(find . -name "*.go" -not -path "*vendor*" | sort)
 
-${XGETTEXT}:
-	@mkdir -p ./bin && \
-	wget -O ./bin/xgettext-go https://git.coopcloud.tech/toolshed/xgettext-go/raw/branch/main/xgettext-go && \
-	chmod +x ./bin/xgettext-go
+.PHONY: xgettext-go
+xgettext-go:
+	@command -v $(XGETTEXT) >/dev/null 2>&1 || \
+		go install git.coopcloud.tech/toolshed/xgettext-go@latest
 
 .PHONY: update-pot-po-metadata
 update-pot-po-metadata:

cli/app/deploy.go

@@ -114,7 +114,9 @@ checkout as-is. Recipe commit hashes are also supported as values for
 		}
 
 		if !isChaosCommit && !tagcmp.IsParsable(toDeployVersion) {
-			log.Fatal(i18n.G("unable to parse deploy version: %s", toDeployVersion))
+			log.Warnf(i18n.G("version '%s' is not a semver tag; deploying as chaos", toDeployVersion))
+			isChaosCommit = true
+			internal.Chaos = true
 		}
 
 		if !internal.Chaos {
@@ -151,11 +153,12 @@ checkout as-is. Recipe commit hashes are also supported as values for
 
 		stackName := app.StackName()
 		deployOpts := stack.Deploy{
-			Composefiles: composeFiles,
-			Namespace:    stackName,
-			Prune:        false,
-			ResolveImage: stack.ResolveImageAlways,
-			Detach:       false,
+			Composefiles:     composeFiles,
+			Namespace:        stackName,
+			Prune:            false,
+			ResolveImage:     stack.ResolveImageAlways,
+			Detach:           false,
+			SendRegistryAuth: true,
 		}
 		compose, err := appPkg.GetAppComposeConfig(app.Name, deployOpts, app.Env)
 		if err != nil {

cli/app/new.go

@@ -32,6 +32,18 @@ deploy <domain>" to do so.
 You can see what recipes are available (i.e. values for the [recipe] argument)
 by running "abra recipe ls".
 
+In addition to short catalogue names, [recipe] also accepts arbitrary git
+URLs to use a recipe from outside the catalogue (e.g. a fork or work in
+progress). Any of these forms is accepted:
+
+  abra app new git.example.com/user/recipe
+  abra app new https://git.example.com/user/recipe
+  abra app new git@git.example.com:user/recipe
+
+In that case a RECIPE=<canonical name> line is written to the app's .env
+file so a subsequent "abra app deploy" (on this or another machine) will
+re-fetch the recipe from the same git source.
+
 Recipe commit hashes are supported values for "[version]".
 
 Passing the "--secrets/-S" flag will automatically generate secrets for your
@@ -289,9 +301,13 @@ func createSecrets(cl *dockerClient.Client, secretsConfig map[string]secret.Secr
 // ensureDomainFlag checks if the domain flag was used. if not, asks the user for it/
 func ensureDomainFlag(recipe recipePkg.Recipe, server string) error {
 	if appDomain == "" && !internal.NoInput {
+		shortName := recipe.Name
+		if i := strings.LastIndex(shortName, "/"); i >= 0 {
+			shortName = shortName[i+1:]
+		}
 		prompt := &survey.Input{
 			Message: i18n.G("Specify app domain"),
-			Default: fmt.Sprintf("%s.%s", recipe.Name, server),
+			Default: fmt.Sprintf("%s.%s", shortName, server),
 		}
 		if err := survey.AskOne(prompt, &appDomain); err != nil {
 			return err
@@ -302,6 +318,10 @@ func ensureDomainFlag(recipe recipePkg.Recipe, server string) error {
 		return errors.New(i18n.G("no domain provided"))
 	}
 
+	if strings.ContainsAny(appDomain, "/\\") {
+		return errors.New(i18n.G("invalid domain '%s': must not contain '/' or '\\'", appDomain))
+	}
+
 	return nil
 }
 

cli/app/rollback.go

@@ -166,11 +166,12 @@ beforehand. See "abra app backup" for more.`),
 
 		stackName := app.StackName()
 		deployOpts := stack.Deploy{
-			Composefiles: composeFiles,
-			Namespace:    stackName,
-			Prune:        false,
-			ResolveImage: stack.ResolveImageAlways,
-			Detach:       false,
+			Composefiles:     composeFiles,
+			Namespace:        stackName,
+			Prune:            false,
+			ResolveImage:     stack.ResolveImageAlways,
+			Detach:           false,
+			SendRegistryAuth: true,
 		}
 
 		compose, err := appPkg.GetAppComposeConfig(app.Name, deployOpts, app.Env)

cli/app/upgrade.go

@@ -178,11 +178,12 @@ beforehand. See "abra app backup" for more.`),
 
 		stackName := app.StackName()
 		deployOpts := stack.Deploy{
-			Composefiles: composeFiles,
-			Namespace:    stackName,
-			Prune:        false,
-			ResolveImage: stack.ResolveImageAlways,
-			Detach:       false,
+			Composefiles:     composeFiles,
+			Namespace:        stackName,
+			Prune:            false,
+			ResolveImage:     stack.ResolveImageAlways,
+			Detach:           false,
+			SendRegistryAuth: true,
 		}
 
 		compose, err := appPkg.GetAppComposeConfig(app.Name, deployOpts, app.Env)

cli/internal/validate.go

@@ -59,9 +59,15 @@ func ValidateRecipe(args []string, cmdName string) recipe.Recipe {
 		log.Fatal(i18n.G("no recipe name provided"))
 	}
 
-	if _, ok := knownRecipes[recipeName]; !ok {
-		if !strings.Contains(recipeName, "/") {
-			log.Fatal(i18n.G("no recipe '%s' exists?", recipeName))
+	recipeName = recipe.NormalizeRecipeName(recipeName)
+
+	lookupName := recipeName
+	if i := strings.LastIndex(lookupName, ":"); i >= 0 {
+		lookupName = lookupName[:i]
+	}
+	if _, ok := knownRecipes[lookupName]; !ok {
+		if !strings.Contains(lookupName, "/") {
+			log.Fatal(i18n.G("no recipe '%s' exists? pass a git URL (e.g. https://git.example.com/user/recipe) to use a recipe outside the catalogue", lookupName))
 		}
 	}
 

cli/recipe/list.go

@@ -2,11 +2,13 @@ package recipe
 
 import (
 	"fmt"
+	"path"
 	"sort"
 	"strconv"
 	"strings"
 
 	"coopcloud.tech/abra/cli/internal"
+	"coopcloud.tech/abra/pkg/config"
 	"coopcloud.tech/abra/pkg/formatter"
 	"coopcloud.tech/abra/pkg/i18n"
 	"coopcloud.tech/abra/pkg/log"
@@ -41,6 +43,7 @@ var RecipeListCommand = &cobra.Command{
 
 		headers := []string{
 			i18n.G("name"),
+			i18n.G("source"),
 			i18n.G("category"),
 			i18n.G("status"),
 			i18n.G("healthcheck"),
@@ -56,6 +59,7 @@ var RecipeListCommand = &cobra.Command{
 		for _, recipe := range recipes {
 			row := []string{
 				recipe.Name,
+				i18n.G("catalogue"),
 				recipe.Category,
 				strconv.Itoa(recipe.Features.Status),
 				recipe.Features.Healthcheck,
@@ -76,6 +80,23 @@ var RecipeListCommand = &cobra.Command{
 			}
 		}
 
+		externals := externalRecipes(catl)
+		sort.Strings(externals)
+		for _, name := range externals {
+			row := []string{
+				name,
+				i18n.G("external"),
+				"-", "-", "-", "-", "-", "-", "-",
+			}
+			if pattern != "" {
+				if !strings.Contains(name, pattern) {
+					continue
+				}
+			}
+			table.Row(row...)
+			rows = append(rows, row)
+		}
+
 		if len(rows) > 0 {
 			if internal.MachineReadable {
 				out, err := formatter.ToJSON(headers, rows)
@@ -93,6 +114,30 @@ var RecipeListCommand = &cobra.Command{
 	},
 }
 
+// externalRecipes returns canonical names of locally-cloned recipes that
+// were sourced from an arbitrary git URL (i.e. they carry a .abra-source
+// sidecar) and are not already listed in the catalogue.
+func externalRecipes(catl recipe.RecipeCatalogue) []string {
+	dirs, err := recipe.GetRecipesLocal()
+	if err != nil {
+		log.Debug(i18n.G("can't read local recipes: %s", err))
+		return nil
+	}
+
+	var names []string
+	for _, dir := range dirs {
+		canonical := recipe.ReadRecipeSource(path.Join(config.RECIPES_DIR, dir))
+		if canonical == "" {
+			continue
+		}
+		if _, inCatalogue := catl[canonical]; inCatalogue {
+			continue
+		}
+		names = append(names, canonical)
+	}
+	return names
+}
+
 var (
 	pattern string
 )

cmd/abra/main.go

@@ -16,7 +16,7 @@ func main() {
 		Version = "dev"
 	}
 	if Commit == "" {
-		Commit = "       "
+		Commit = "unknown-commit"
 	}
 
 	cli.Run(Version, Commit)

devbox.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.17.2/.schema/devbox.schema.json",
+  "packages": [
+    "go@1.26",
+    "gnumake@latest",
+    "gettext@latest"
+  ],
+  "env": {
+    "GOPATH": "$PWD/.devbox",
+    "PATH": "$PWD/.devbox/bin:$PATH"
+  },
+  "shell": {
+    "init_hook": [
+      "mkdir -p .devbox/bin"
+    ],
+    "scripts": {
+      "xgettext-go": [
+        "go install git.coopcloud.tech/toolshed/xgettext-go@latest"
+      ],
+      "build": [
+        "make build"
+      ],
+      "test": [
+        "make test"
+      ]
+    }
+  }
+}

devbox.lock

@@ -0,0 +1,265 @@
+{
+  "lockfile_version": "1",
+  "packages": {
+    "gettext@latest": {
+      "last_modified": "2026-05-21T08:15:18Z",
+      "resolved": "github:NixOS/nixpkgs/4a29d733e8a7d5b824c3d8c958a946a9867b3eb2#gettext",
+      "source": "devbox-search",
+      "version": "1.0",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/i5aw4v15lklq5r5w5clvcy8dxc2igjck-gettext-1.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/17g5cqxvbkxivmfd39ppvyc0rx1wpcn8-gettext-1.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/kfx0dvvkmyw91jbqnp58yhzlxqi1xyi0-gettext-1.0-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/d14xspsnm4xj9w8yicrj50xmhs8bb5s2-gettext-1.0-info"
+            }
+          ],
+          "store_path": "/nix/store/i5aw4v15lklq5r5w5clvcy8dxc2igjck-gettext-1.0"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/jdqf3kqpj22agyhakrk5gklvzc6fxp3l-gettext-1.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/axz6675qpbr93bbs1hfz60m0dm1i01mg-gettext-1.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/5wckc0cg4l9wbmaqsi08rrmc09q7mxym-gettext-1.0-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/fd0d7h9y3kvp9i3x172lsj3x5ffz6sh7-gettext-1.0-info"
+            }
+          ],
+          "store_path": "/nix/store/jdqf3kqpj22agyhakrk5gklvzc6fxp3l-gettext-1.0"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/f46icmrv0rpaykfxs313d4g17g0jxn02-gettext-1.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/nk8dbg526a7lmsr4x41nbj3hizjk7f6k-gettext-1.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/w0wgn2f7ha2kp5ank9ymf1l8mlfki30a-gettext-1.0-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/cvp75qjcdjh8xrhzhrrdc62dyfil1f5j-gettext-1.0-info"
+            }
+          ],
+          "store_path": "/nix/store/f46icmrv0rpaykfxs313d4g17g0jxn02-gettext-1.0"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/rb8rna9gkhs0ybl6z2p904myslh8llg8-gettext-1.0",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/ck224axif94df161wk7b0wzwm035747f-gettext-1.0-man",
+              "default": true
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/2lp7blpw8ahc683287gbnp6vn4i9p9q4-gettext-1.0-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/33xaaniyh3qk6mq75dzx7v9c55n21i3p-gettext-1.0-info"
+            }
+          ],
+          "store_path": "/nix/store/rb8rna9gkhs0ybl6z2p904myslh8llg8-gettext-1.0"
+        }
+      }
+    },
+    "github:NixOS/nixpkgs/nixpkgs-unstable": {
+      "last_modified": "2026-05-27T10:28:13Z",
+      "resolved": "github:NixOS/nixpkgs/4100e830e085863741bc69b156ec4ccd53ab5be0?lastModified=1779877693&narHash=sha256-NOF9NAREhxr50bbBfVcVOq%2BArCMSoe8dP79Pk2uyARk%3D"
+    },
+    "gnumake@latest": {
+      "last_modified": "2026-05-27T10:28:13Z",
+      "resolved": "github:NixOS/nixpkgs/4100e830e085863741bc69b156ec4ccd53ab5be0#gnumake",
+      "source": "devbox-search",
+      "version": "4.4.1",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/8wwiw8pwyhrkzyq28hqzxfl4z84lks81-gnumake-4.4.1",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/wdm9prq35jlgwq6rjyhqxy4jzy833sfr-gnumake-4.4.1-man",
+              "default": true
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/6dbp1ysgxsrrn7xgjgf523faqrm605a5-gnumake-4.4.1-info"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/sl2ygvgjg4ml8dhyfxj5kh84x2bs1mhc-gnumake-4.4.1-doc"
+            }
+          ],
+          "store_path": "/nix/store/8wwiw8pwyhrkzyq28hqzxfl4z84lks81-gnumake-4.4.1"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/9ngw1ippk25jjj5fjxv36xbp6iq7rxdx-gnumake-4.4.1",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/dg3aa71vii59scbfhi02cdxnps64x6ql-gnumake-4.4.1-man",
+              "default": true
+            },
+            {
+              "name": "debug",
+              "path": "/nix/store/mdv67w2xvchbs76zjdzppdkk64z5avki-gnumake-4.4.1-debug"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/bybbj9avk3g107mwhgvkzkpm6mkbl8gv-gnumake-4.4.1-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/bxdqxx2q13sj15ss8z5l33jd31x55j5l-gnumake-4.4.1-info"
+            }
+          ],
+          "store_path": "/nix/store/9ngw1ippk25jjj5fjxv36xbp6iq7rxdx-gnumake-4.4.1"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/60y2hs45l18g56ykw9789b5vhhi2ls5q-gnumake-4.4.1",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/m2ba4bwmfgh994xbg1iqm6zj1mdrq8h7-gnumake-4.4.1-man",
+              "default": true
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/apljbm6plyajbfrnwif0a2d4nx6w0cpf-gnumake-4.4.1-info"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/s9y438l347nky6rkl1wfk2y3b0d9i636-gnumake-4.4.1-doc"
+            }
+          ],
+          "store_path": "/nix/store/60y2hs45l18g56ykw9789b5vhhi2ls5q-gnumake-4.4.1"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/d3bwqm6bymhy3pdgbvf7vxjqfp31m3j1-gnumake-4.4.1",
+              "default": true
+            },
+            {
+              "name": "man",
+              "path": "/nix/store/bmvqa5ym318mymhxlwwmxq8wxal958p4-gnumake-4.4.1-man",
+              "default": true
+            },
+            {
+              "name": "debug",
+              "path": "/nix/store/q683z843wi7xs96pngh1kinnx88vn2if-gnumake-4.4.1-debug"
+            },
+            {
+              "name": "doc",
+              "path": "/nix/store/wxg27bzsljjw4k72m9b2v6a0fx5a68s0-gnumake-4.4.1-doc"
+            },
+            {
+              "name": "info",
+              "path": "/nix/store/03d41qgjsrhcr3fzq2z99ry07rahnj0v-gnumake-4.4.1-info"
+            }
+          ],
+          "store_path": "/nix/store/d3bwqm6bymhy3pdgbvf7vxjqfp31m3j1-gnumake-4.4.1"
+        }
+      }
+    },
+    "go@1.26": {
+      "last_modified": "2026-05-21T08:15:18Z",
+      "resolved": "github:NixOS/nixpkgs/4a29d733e8a7d5b824c3d8c958a946a9867b3eb2#go",
+      "source": "devbox-search",
+      "version": "1.26.3",
+      "systems": {
+        "aarch64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/7ycp8j45iay38g9mjaxmy4jhwdsrb47y-go-1.26.3",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/7ycp8j45iay38g9mjaxmy4jhwdsrb47y-go-1.26.3"
+        },
+        "aarch64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/jkcwcbwvhgzmxg59798z4clmj4bfv42i-go-1.26.3",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/jkcwcbwvhgzmxg59798z4clmj4bfv42i-go-1.26.3"
+        },
+        "x86_64-darwin": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/3f2jzvxmhhlarjqxy1p7i9r5l34siz29-go-1.26.3",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/3f2jzvxmhhlarjqxy1p7i9r5l34siz29-go-1.26.3"
+        },
+        "x86_64-linux": {
+          "outputs": [
+            {
+              "name": "out",
+              "path": "/nix/store/33fw5m31lfcnk4ff2f0df7j2bxnh8lgk-go-1.26.3",
+              "default": true
+            }
+          ],
+          "store_path": "/nix/store/33fw5m31lfcnk4ff2f0df7j2bxnh8lgk-go-1.26.3"
+        }
+      }
+    }
+  }
+}

flake.lock

@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1778443072,
+        "narHash": "sha256-zi7/fsqM/kFdNuED//4WOCUtezGtKKqRNORjMvfwjnA=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "da5ad661ba4e5ef59ba743f0d112cbc30e474f32",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "The Co-op Cloud utility belt";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in
+      {
+        packages = rec {
+          abra = pkgs.callPackage ./package.nix { };
+          default = abra;
+        };
+        apps = rec {
+          abra = flake-utils.lib.mkApp { drv = self.packages.${system}.abra; };
+          default = abra;
+        };
+        devShells.default = pkgs.mkShell {
+          packages = with pkgs; [
+            go_1_26
+            gnumake
+          ];
+        };
+      }
+    );
+}

go.mod

@@ -3,7 +3,7 @@ module coopcloud.tech/abra
 go 1.26.0
 
 require (
-	coopcloud.tech/tagcmp v0.0.0-20250818180036-0ec1b205b5ca
+	coopcloud.tech/tagcmp v0.0.0-20260515102403-c26951b55977
 	git.coopcloud.tech/toolshed/godotenv v1.5.2-0.20250103171850-4d0ca41daa5c
 	github.com/AlecAivazis/survey/v2 v2.3.7
 	github.com/charmbracelet/bubbletea v1.3.10
@@ -13,14 +13,14 @@ require (
 	github.com/docker/cli v28.4.0+incompatible
 	github.com/docker/docker v28.5.2+incompatible
 	github.com/docker/go-units v0.5.0
-	github.com/go-git/go-git/v5 v5.17.2
+	github.com/go-git/go-git/v5 v5.19.1
 	github.com/google/go-cmp v0.7.0
 	github.com/leonelquinteros/gotext v1.7.2
 	github.com/moby/sys/signal v0.7.1
 	github.com/moby/term v0.5.2
 	github.com/pkg/errors v0.9.1
 	github.com/schollz/progressbar/v3 v3.19.0
-	golang.org/x/term v0.41.0
+	golang.org/x/term v0.43.0
 	gopkg.in/yaml.v3 v3.0.1
 	gotest.tools/v3 v3.5.2
 )
@@ -60,7 +60,7 @@ require (
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/ghodss/yaml v1.0.0 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
-	github.com/go-git/go-billy/v5 v5.8.0 // indirect
+	github.com/go-git/go-billy/v5 v5.9.0 // indirect
 	github.com/go-logfmt/logfmt v0.6.1 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -96,7 +96,7 @@ require (
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/runc v1.1.13 // indirect
 	github.com/opencontainers/runtime-spec v1.1.0 // indirect
-	github.com/pjbgf/sha1cd v0.5.0 // indirect
+	github.com/pjbgf/sha1cd v0.6.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.67.5 // indirect
@@ -124,10 +124,10 @@ require (
 	go.opentelemetry.io/proto/otlp v1.10.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.4 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/crypto v0.49.0 // indirect
-	golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 // indirect
-	golang.org/x/net v0.52.0 // indirect
-	golang.org/x/text v0.35.0 // indirect
+	golang.org/x/crypto v0.50.0 // indirect
+	golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f // indirect
+	golang.org/x/net v0.53.0 // indirect
+	golang.org/x/text v0.36.0 // indirect
 	golang.org/x/time v0.15.0 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 // indirect
@@ -155,9 +155,9 @@ require (
 	github.com/stretchr/testify v1.11.1
 	github.com/theupdateframework/notary v0.7.0 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
-	golang.org/x/sys v0.42.0
+	golang.org/x/sys v0.45.0
 )
 
 replace github.com/docker/cli v28.4.0+incompatible => git.coopcloud.tech/toolshed/docker-cli v28.5.3-0.20260202112816-30df2d0b3a00+incompatible
 
-replace github.com/spf13/cobra => github.com/decentral1se/cobra v1.10.2-i18n
+replace github.com/spf13/cobra => github.com/decentral1se/cobra v1.10.2

go.sum

@@ -22,8 +22,8 @@ cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIA
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-coopcloud.tech/tagcmp v0.0.0-20250818180036-0ec1b205b5ca h1:gSD53tBAsbIGq4SnFfq+mEep6foekQ2a5ea7b38qkm0=
-coopcloud.tech/tagcmp v0.0.0-20250818180036-0ec1b205b5ca/go.mod h1:ESVm0wQKcbcFi06jItF3rI7enf4Jt2PvbkWpDDHk1DQ=
+coopcloud.tech/tagcmp v0.0.0-20260515102403-c26951b55977 h1:J7I0HFjwVAj/kkX6lwSTHmlXDRjQRsdIFNUUqu55ADY=
+coopcloud.tech/tagcmp v0.0.0-20260515102403-c26951b55977/go.mod h1:ESVm0wQKcbcFi06jItF3rI7enf4Jt2PvbkWpDDHk1DQ=
 dario.cat/mergo v1.0.2 h1:85+piFYR1tMbRrLcDwR18y4UKJ3aH1Tbzi24VRW1TK8=
 dario.cat/mergo v1.0.2/go.mod h1:E/hbnu0NxMFBjpMIE34DRGLWqDy0g5FuKDhCb31ngxA=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
@@ -308,8 +308,8 @@ github.com/d2g/hardwareaddr v0.0.0-20190221164911-e7d9fbe030e4/go.mod h1:bMl4RjI
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/decentral1se/cobra v1.10.2-i18n h1:XR+6AHHfnf4k5NM9f09oLMrEVwz3rkQIAIcqgL8R08g=
-github.com/decentral1se/cobra v1.10.2-i18n/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
+github.com/decentral1se/cobra v1.10.2 h1:MZ8Ifi/jRels9sZrpSccDbUlK++3b2HlBODfv0Bh6x0=
+github.com/decentral1se/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
 github.com/decentral1se/passgen v1.0.1 h1:j2AxK/kHKxDHWZZfkJj8Wgae9+O+DYEqR5sjKthIYKA=
 github.com/decentral1se/passgen v1.0.1/go.mod h1:530V+lNoPhKtkrX2fIVsIfLhkl47CuiOM7HRgi7C+SU=
 github.com/denisenkom/go-mssqldb v0.0.0-20191128021309-1d7a30a10f73/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
@@ -389,12 +389,12 @@ github.com/gliderlabs/ssh v0.3.8 h1:a4YXD1V7xMF9g5nTkdfnja3Sxy1PVDCj1Zg4Wb8vY6c=
 github.com/gliderlabs/ssh v0.3.8/go.mod h1:xYoytBv1sV0aL3CavoDuJIQNURXkkfPA/wxQ1pL1fAU=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 h1:+zs/tPmkDkHx3U66DAb0lQFJrpS6731Oaa12ikc+DiI=
 github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376/go.mod h1:an3vInlBmSxCcxctByoQdvwPiA7DTK7jaaFDBTtu0ic=
-github.com/go-git/go-billy/v5 v5.8.0 h1:I8hjc3LbBlXTtVuFNJuwYuMiHvQJDq1AT6u4DwDzZG0=
-github.com/go-git/go-billy/v5 v5.8.0/go.mod h1:RpvI/rw4Vr5QA+Z60c6d6LXH0rYJo0uD5SqfmrrheCY=
+github.com/go-git/go-billy/v5 v5.9.0 h1:jItGXszUDRtR/AlferWPTMN4j38BQ88XnXKbilmmBPA=
+github.com/go-git/go-billy/v5 v5.9.0/go.mod h1:jCnQMLj9eUgGU7+ludSTYoZL/GGmii14RxKFj7ROgHw=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399 h1:eMje31YglSBqCdIqdhKBW8lokaMrL3uTkpGYlE2OOT4=
 github.com/go-git/go-git-fixtures/v4 v4.3.2-0.20231010084843-55a94097c399/go.mod h1:1OCfN199q1Jm3HZlxleg+Dw/mwps2Wbk9frAWm+4FII=
-github.com/go-git/go-git/v5 v5.17.2 h1:B+nkdlxdYrvyFK4GPXVU8w1U+YkbsgciIR7f2sZJ104=
-github.com/go-git/go-git/v5 v5.17.2/go.mod h1:pW/VmeqkanRFqR6AljLcs7EA7FbZaN5MQqO7oZADXpo=
+github.com/go-git/go-git/v5 v5.19.1 h1:nX27AnaU43/K5bKktKwgBmR9lawoYVe1Ckg0rgzzN00=
+github.com/go-git/go-git/v5 v5.19.1/go.mod h1:Pb1v0c7/g8aGQJwx9Us09W85yGoyvSwuhEGMH7zjDKQ=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
 github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
@@ -753,8 +753,8 @@ github.com/opencontainers/selinux v1.10.0/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuh
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/pelletier/go-toml v1.8.1/go.mod h1:T2/BmBdy8dvIRq1a/8aqjN41wvWlN4lrapLU/GW4pbc=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
-github.com/pjbgf/sha1cd v0.5.0 h1:a+UkboSi1znleCDUNT3M5YxjOnN1fz2FhN48FlwCxs0=
-github.com/pjbgf/sha1cd v0.5.0/go.mod h1:lhpGlyHLpQZoxMv8HcgXvZEhcGs0PG/vsZnEJ7H0iCM=
+github.com/pjbgf/sha1cd v0.6.0 h1:3WJ8Wz8gvDz29quX1OcEmkAlUg9diU4GxJHqs0/XiwU=
+github.com/pjbgf/sha1cd v0.6.0/go.mod h1:lhpGlyHLpQZoxMv8HcgXvZEhcGs0PG/vsZnEJ7H0iCM=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1-0.20171018195549-f15c970de5b7/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -966,8 +966,8 @@ golang.org/x/crypto v0.0.0-20201117144127-c1f2f97bffc9/go.mod h1:jdWPYTVW3xRLrWP
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/crypto v0.49.0 h1:+Ng2ULVvLHnJ/ZFEq4KdcDd/cfjrrjjNSXNzxg0Y4U4=
-golang.org/x/crypto v0.49.0/go.mod h1:ErX4dUh2UM+CFYiXZRTcMpEcN8b/1gxEuv3nODoYtCA=
+golang.org/x/crypto v0.50.0 h1:zO47/JPrL6vsNkINmLoo/PH1gcxpls50DNogFvB5ZGI=
+golang.org/x/crypto v0.50.0/go.mod h1:3muZ7vA7PBCE6xgPX7nkzzjiUq87kRItoJQM1Yo8S+Q=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -978,8 +978,8 @@ golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u0
 golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
-golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90 h1:jiDhWWeC7jfWqR9c/uplMOqJ0sbNlNWv0UkzE0vX1MA=
-golang.org/x/exp v0.0.0-20260312153236-7ab1446f8b90/go.mod h1:xE1HEv6b+1SCZ5/uscMRjUBKtIxworgEcEi+/n9NQDQ=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f h1:W3F4c+6OLc6H2lb//N1q4WpJkhzJCK5J6kUi1NTVXfM=
+golang.org/x/exp v0.0.0-20260410095643-746e56fc9e2f/go.mod h1:J1xhfL/vlindoeF/aINzNzt2Bket5bjo9sdOYzOsU80=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -1043,8 +1043,8 @@ golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96b
 golang.org/x/net v0.0.0-20210825183410-e898025ed96a/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.52.0 h1:He/TN1l0e4mmR3QqHMT2Xab3Aj3L9qjbhRm78/6jrW0=
-golang.org/x/net v0.52.0/go.mod h1:R1MAz7uMZxVMualyPXb+VaqGSa3LIaUqk0eEt3w36Sw=
+golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA=
+golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -1140,13 +1140,13 @@ golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
-golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+golang.org/x/sys v0.45.0 h1:dO4czNzziLiiXplLQgBCEpCvXQ3dnkn0SdaZSYdQ+FY=
+golang.org/x/sys v0.45.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.41.0 h1:QCgPso/Q3RTJx2Th4bDLqML4W6iJiaXFq2/ftQF13YU=
-golang.org/x/term v0.41.0/go.mod h1:3pfBgksrReYfZ5lvYM0kSO0LIkAl4Yl2bXOkKP7Ec2A=
+golang.org/x/term v0.43.0 h1:S4RLU2sB31O/NCl+zFN9Aru9A/Cq2aqKpTZJ6B+DwT4=
+golang.org/x/term v0.43.0/go.mod h1:lrhlHNdQJHO+1qVYiHfFKVuVioJIheAc3fBSMFYEIsk=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -1156,8 +1156,8 @@ golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.35.0 h1:JOVx6vVDFokkpaq1AEptVzLTpDe9KGpj5tR4/X+ybL8=
-golang.org/x/text v0.35.0/go.mod h1:khi/HExzZJ2pGnjenulevKNX1W67CUy0AsXcNubPGCA=
+golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg=
+golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=

package.nix

@@ -0,0 +1,54 @@
+{
+  buildGo126Module,
+  fetchgit,
+  lib,
+  installShellFiles,
+}:
+
+buildGo126Module rec {
+  pname = "abra";
+  version = "0.13.0-beta";
+  rev = "06a57ded025a43c80f94d4e65299add8a31830dc";
+
+  src = fetchgit {
+    url = "https://git.coopcloud.tech/toolshed/abra.git";
+    tag = version;
+    hash = "sha256-rgoK0TY0WLSQ39lPvVM80zW/qJF40VFBSxYDOaKXZQo=";
+  };
+
+  vendorHash = null;
+
+  nativeBuildInputs = [
+    installShellFiles
+  ];
+
+  env.CGO_ENABLED = 0;
+  buildPhase = ''
+    runHook preBuild
+    go build -ldflags="-s -w -X 'main.Commit=${rev}' -X 'main.Version=${version}'" ./cmd/abra
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    install -D abra $out/bin/abra
+    runHook postInstall
+  '';
+
+  postInstall = ''
+    export ABRA_DIR="$out"
+    $out/bin/abra autocomplete bash >abra.bash
+    $out/bin/abra autocomplete fish >abra.fish
+    $out/bin/abra autocomplete zsh >abra.zsh
+    installShellCompletion abra.{bash,fish,zsh}
+  '';
+
+  meta = with lib; {
+    description = "The Co-op Cloud utility belt";
+    homepage = "https://docs.coopcloud.tech/abra";
+    changelog = "https://git.coopcloud.tech/toolshed/abra/releases/tag/${version}";
+    mainProgram = "abra";
+    license = licenses.gpl3Plus;
+    maintainers = "devydave";
+  };
+}

pkg/app/app.go

@@ -390,13 +390,21 @@ func TemplateAppEnvSample(r recipe.Recipe, appName, server, domain string) error
 		return err
 	}
 
+	shortName := r.Name
+	if i := strings.LastIndex(shortName, "/"); i >= 0 {
+		shortName = shortName[i+1:]
+	}
 	newContents := strings.Replace(
 		string(read),
-		fmt.Sprintf("%s.example.com", r.Name),
+		fmt.Sprintf("%s.example.com", shortName),
 		domain,
 		-1,
 	)
 
+	if strings.Contains(r.Name, "/") {
+		newContents = injectRecipeLine(newContents, r.Name)
+	}
+
 	err = os.WriteFile(appEnvPath, []byte(newContents), 0)
 	if err != nil {
 		return err
@@ -407,6 +415,37 @@ func TemplateAppEnvSample(r recipe.Recipe, appName, server, domain string) error
 	return nil
 }
 
+// injectRecipeLine ensures the env file carries a RECIPE=<canonical name>
+// line so a downstream `abra app deploy` (potentially on another machine)
+// can re-fetch the recipe from its original git source. If a RECIPE= line
+// already exists in the copied .env.sample it is replaced; otherwise a new
+// line is inserted immediately after the TYPE= line, or appended at the
+// end if no TYPE= line is present.
+func injectRecipeLine(contents, canonicalName string) string {
+	lines := strings.Split(contents, "\n")
+	for i, line := range lines {
+		trimmed := strings.TrimLeft(line, " \t")
+		if strings.HasPrefix(trimmed, "RECIPE=") {
+			lines[i] = "RECIPE=" + canonicalName
+			return strings.Join(lines, "\n")
+		}
+	}
+	for i, line := range lines {
+		trimmed := strings.TrimLeft(line, " \t")
+		if strings.HasPrefix(trimmed, "TYPE=") {
+			out := make([]string, 0, len(lines)+1)
+			out = append(out, lines[:i+1]...)
+			out = append(out, "RECIPE="+canonicalName)
+			out = append(out, lines[i+1:]...)
+			return strings.Join(out, "\n")
+		}
+	}
+	if contents != "" && !strings.HasSuffix(contents, "\n") {
+		contents += "\n"
+	}
+	return contents + "RECIPE=" + canonicalName + "\n"
+}
+
 // SanitiseAppName makes a app name usable with Docker by replacing illegal
 // characters.
 func SanitiseAppName(name string) string {

pkg/formatter/formatter.go

@@ -27,10 +27,16 @@ var BoldUnderlineStyle = lipgloss.NewStyle().
 	Underline(true)
 
 func ShortenID(str string) string {
+	if len(str) < 12 {
+		return str
+	}
 	return str[:12]
 }
 
 func SmallSHA(hash string) string {
+	if len(hash) < 8 {
+		return hash
+	}
 	return hash[:8]
 }
 

pkg/git/read.go

@@ -36,6 +36,11 @@ func IsClean(repoPath string) (bool, error) {
 		return false, err
 	}
 
+	// Ignore the abra-managed sidecar file that records the canonical
+	// source URL for externally-cloned recipes; it lives alongside the
+	// recipe but is not part of the upstream tree.
+	patterns = append(patterns, gitignore.ParsePattern(".abra-source", nil))
+
 	if len(patterns) > 0 {
 		worktree.Excludes = append(patterns, worktree.Excludes...)
 	}

pkg/git/read_test.go

@@ -2,6 +2,8 @@ package git
 
 import (
 	"errors"
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/go-git/go-git/v5"
@@ -13,3 +15,37 @@ func TestIsClean(t *testing.T) {
 	assert.Equal(t, isClean, false)
 	assert.True(t, errors.Is(err, git.ErrRepositoryNotExists))
 }
+
+// TestIsCleanIgnoresAbraSource confirms that the .abra-source sidecar
+// file written by abra next to externally-cloned recipes does not cause
+// IsClean to report the worktree as dirty.
+func TestIsCleanIgnoresAbraSource(t *testing.T) {
+	dir := t.TempDir()
+
+	if _, err := git.PlainInit(dir, false); err != nil {
+		t.Fatalf("git init failed: %s", err)
+	}
+
+	sidecar := filepath.Join(dir, ".abra-source")
+	if err := os.WriteFile(sidecar, []byte("git.example.com/u/recipe\n"), 0o644); err != nil {
+		t.Fatalf("writing sidecar failed: %s", err)
+	}
+
+	isClean, err := IsClean(dir)
+	if err != nil {
+		t.Fatalf("IsClean returned error: %s", err)
+	}
+	assert.True(t, isClean, "expected worktree with only .abra-source to be reported clean")
+
+	// Sanity check: an unrelated untracked file should still mark it dirty.
+	other := filepath.Join(dir, "random.txt")
+	if err := os.WriteFile(other, []byte("hello"), 0o644); err != nil {
+		t.Fatalf("writing extra file failed: %s", err)
+	}
+
+	isClean, err = IsClean(dir)
+	if err != nil {
+		t.Fatalf("IsClean returned error: %s", err)
+	}
+	assert.False(t, isClean, "expected worktree with unrelated untracked file to be reported dirty")
+}

pkg/i18n/locales/abra.pot

@@ -7,7 +7,7 @@
 msgid   ""
 msgstr  "Project-Id-Version: \n"
         "Report-Msgid-Bugs-To: EMAIL\n"
-        "POT-Creation-Date: 2026-04-11 11:34+0200\n"
+        "POT-Creation-Date: 2026-05-30 11:14+0200\n"
         "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
         "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
         "Language-Team: LANGUAGE <LL@li.org>\n"

pkg/recipe/git.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"path"
 	"slices"
 	"sort"
 	"strings"
@@ -19,6 +20,11 @@ import (
 	"github.com/go-git/go-git/v5/plumbing"
 )
 
+// SourceFile is the sidecar file written next to an externally-cloned
+// recipe so the canonical "host/path" name can be recovered later (the
+// on-disk directory name escapes "/" and "." to "_", which is lossy).
+const SourceFile = ".abra-source"
+
 type EnsureContext struct {
 	Chaos            bool
 	Offline          bool
@@ -78,6 +84,12 @@ func (r Recipe) EnsureExists() error {
 		if err := gitPkg.Clone(r.Dir, r.GitURL); err != nil {
 			return err
 		}
+		if strings.Contains(r.Name, "/") {
+			sidecar := path.Join(r.Dir, SourceFile)
+			if err := os.WriteFile(sidecar, []byte(r.Name+"\n"), 0o644); err != nil {
+				log.Debug(i18n.G("failed to write recipe source sidecar %s: %s", sidecar, err))
+			}
+		}
 	}
 
 	if err := gitPkg.EnsureGitRepo(r.Dir); err != nil {
@@ -87,6 +99,18 @@ func (r Recipe) EnsureExists() error {
 	return nil
 }
 
+// ReadRecipeSource returns the canonical name recorded in the .abra-source
+// sidecar inside the given recipe directory, or the empty string if no
+// sidecar exists. This lets callers recover the unescaped "host/path"
+// form for externally-cloned recipes.
+func ReadRecipeSource(recipeDir string) string {
+	data, err := os.ReadFile(path.Join(recipeDir, SourceFile))
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(data))
+}
+
 // IsChaosCommit determines if a version sttring is a chaos commit or not.
 func (r Recipe) IsChaosCommit(version string) (bool, error) {
 	isChaosCommit := false
@@ -163,6 +187,9 @@ func (r Recipe) EnsureVersion(version string) (bool, error) {
 
 		hash, err := repo.ResolveRevision(plumbing.Revision(version))
 		if err != nil {
+			if isRemoteBranch(repo, version) {
+				log.Fatal(i18n.G("'%s' is a branch name; ':<version>' only supports tags or commit hashes, not branches", version))
+			}
 			log.Fatal(i18n.G("unable to resolve '%s': %s", version, err))
 		}
 
@@ -479,6 +506,28 @@ func (r Recipe) GetRecipeVersions() (RecipeVersions, []string, error) {
 	return versions, uniqueWarnings, nil
 }
 
+// isRemoteBranch reports whether name matches a branch on any configured
+// remote. Used to give a clearer error when a user passes a branch as the
+// ":version" suffix, which is unsupported.
+func isRemoteBranch(repo *git.Repository, name string) bool {
+	remotes, err := repo.Remotes()
+	if err != nil {
+		return false
+	}
+	for _, remote := range remotes {
+		refs, err := remote.List(&git.ListOptions{})
+		if err != nil {
+			continue
+		}
+		for _, ref := range refs {
+			if ref.Name().IsBranch() && ref.Name().Short() == name {
+				return true
+			}
+		}
+	}
+	return false
+}
+
 // Head retrieves latest HEAD metadata.
 func (r Recipe) Head() (*plumbing.Reference, error) {
 	repo, err := git.PlainOpen(r.Dir)

pkg/recipe/recipe.go

@@ -8,6 +8,7 @@ import (
 	"net/url"
 	"os"
 	"path"
+	"regexp"
 	"sort"
 	"strconv"
 	"strings"
@@ -121,7 +122,83 @@ type Features struct {
 	SSO         string `json:"sso"`
 }
 
+// scpURLPattern matches SCP-style git URLs like git@host:path or git@host:port/path.
+// Captures: 1=host(:port)?, 2=path.
+var scpURLPattern = regexp.MustCompile(`^[\w.-]+@([\w.-]+(?::\d+)?):(.+)$`)
+
+// NormalizeRecipeName canonicalizes a recipe identifier to a stable
+// "host/path" form (or returns short catalog names unchanged). Accepts:
+//
+//   - https://host/path[.git][:version]
+//   - http://host/path[.git][:version]
+//   - ssh://git@host[:port]/path[.git][:version]
+//   - git@host:path[.git][:version]            (SCP-style)
+//   - host/path[.git][:version]                (already canonical)
+//   - short-name[:version]                     (catalog recipe, pass through)
+//
+// The optional trailing :version suffix is preserved verbatim. The .git
+// suffix and trailing slashes on the path are stripped so the four URL
+// forms of the same repository collapse to one canonical value.
+func NormalizeRecipeName(input string) string {
+	input = strings.TrimSpace(input)
+
+	// Split off the version suffix first, but only if it's not part of a
+	// scheme (https://) or SCP-style git@host: prefix. The simplest way is
+	// to detect those prefixes and treat the rest as the path-with-version.
+	var (
+		body    = input
+		version string
+	)
+
+	switch {
+	case strings.HasPrefix(input, "https://") || strings.HasPrefix(input, "http://") || strings.HasPrefix(input, "ssh://"):
+		u, err := url.Parse(input)
+		if err != nil {
+			return input
+		}
+		host := u.Hostname() // strip port to keep canonical form colon-free
+		p := strings.TrimPrefix(u.Path, "/")
+		p, version = splitVersion(p)
+		body = host + "/" + p
+	case scpURLPattern.MatchString(input):
+		m := scpURLPattern.FindStringSubmatch(input)
+		host := m[1]
+		if i := strings.Index(host, ":"); i >= 0 {
+			host = host[:i] // strip port
+		}
+		p, v := splitVersion(m[2])
+		body = host + "/" + p
+		version = v
+	default:
+		body, version = splitVersion(input)
+	}
+
+	body = strings.TrimSuffix(body, "/")
+	body = strings.TrimSuffix(body, ".git")
+
+	if version != "" {
+		return body + ":" + version
+	}
+	return body
+}
+
+// splitVersion separates a trailing ":version" suffix from a recipe path.
+// It only treats the final colon-separated segment as a version if it
+// looks like one (no slashes, contains a digit or '+').
+func splitVersion(s string) (string, string) {
+	idx := strings.LastIndex(s, ":")
+	if idx < 0 {
+		return s, ""
+	}
+	candidate := s[idx+1:]
+	if candidate == "" || strings.ContainsAny(candidate, "/") {
+		return s, ""
+	}
+	return s[:idx], candidate
+}
+
 func Get(name string) Recipe {
+	name = NormalizeRecipeName(name)
 	version := ""
 	versionRaw := ""
 	if strings.Contains(name, ":") {

pkg/recipe/recipe_test.go

@@ -88,6 +88,88 @@ func TestGet(t *testing.T) {
 				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
 			},
 		},
+		{
+			name: "https://mygit.org/myorg/cool-recipe",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
+		{
+			name: "https://mygit.org/myorg/cool-recipe.git",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
+		{
+			name: "https://mygit.org/myorg/cool-recipe.git:1.2.4",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				EnvVersion:    "1.2.4",
+				EnvVersionRaw: "1.2.4",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
+		{
+			name: "ssh://git@mygit.org/myorg/cool-recipe.git",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
+		{
+			name: "git@mygit.org:myorg/cool-recipe.git",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
+		{
+			name: "git@mygit.org:myorg/cool-recipe:1.2.4",
+			recipe: Recipe{
+				Name:          "mygit.org/myorg/cool-recipe",
+				EnvVersion:    "1.2.4",
+				EnvVersionRaw: "1.2.4",
+				Dir:           path.Join(cfg.GetAbraDir(), "/recipes/mygit_org_myorg_cool-recipe"),
+				GitURL:        "https://mygit.org/myorg/cool-recipe.git",
+				SSHURL:        "ssh://git@mygit.org/myorg/cool-recipe.git",
+				ComposePath:   path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/compose.yml"),
+				ReadmePath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/README.md"),
+				SampleEnvPath: path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/.env.sample"),
+				AbraShPath:    path.Join(cfg.GetAbraDir(), "recipes/mygit_org_myorg_cool-recipe/abra.sh"),
+			},
+		},
 	}
 
 	for _, tc := range testcases {
@@ -101,6 +183,49 @@ func TestGet(t *testing.T) {
 	}
 }
 
+func TestNormalizeRecipeName(t *testing.T) {
+	cases := []struct {
+		in, want string
+	}{
+		// catalog short names pass through
+		{"foo", "foo"},
+		{"foo:1.2.3", "foo:1.2.3"},
+
+		// bare host/path form
+		{"mygit.org/myorg/cool-recipe", "mygit.org/myorg/cool-recipe"},
+		{"mygit.org/myorg/cool-recipe.git", "mygit.org/myorg/cool-recipe"},
+		{"mygit.org/myorg/cool-recipe.git:1.2.3", "mygit.org/myorg/cool-recipe:1.2.3"},
+		{"mygit.org/myorg/cool-recipe/", "mygit.org/myorg/cool-recipe"},
+
+		// https://
+		{"https://mygit.org/myorg/cool-recipe", "mygit.org/myorg/cool-recipe"},
+		{"https://mygit.org/myorg/cool-recipe.git", "mygit.org/myorg/cool-recipe"},
+		{"https://mygit.org/myorg/cool-recipe.git:1.2.3", "mygit.org/myorg/cool-recipe:1.2.3"},
+		{"http://mygit.org/myorg/cool-recipe", "mygit.org/myorg/cool-recipe"},
+
+		// ssh://, with and without port
+		{"ssh://git@mygit.org/myorg/cool-recipe.git", "mygit.org/myorg/cool-recipe"},
+		{"ssh://git@mygit.org:2222/myorg/cool-recipe.git", "mygit.org/myorg/cool-recipe"},
+
+		// SCP-style git@host:path
+		{"git@mygit.org:myorg/cool-recipe", "mygit.org/myorg/cool-recipe"},
+		{"git@mygit.org:myorg/cool-recipe.git", "mygit.org/myorg/cool-recipe"},
+		{"git@mygit.org:myorg/cool-recipe:1.2.3", "mygit.org/myorg/cool-recipe:1.2.3"},
+
+		// whitespace
+		{"  https://mygit.org/myorg/cool-recipe  ", "mygit.org/myorg/cool-recipe"},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.in, func(t *testing.T) {
+			got := NormalizeRecipeName(tc.in)
+			if got != tc.want {
+				t.Errorf("NormalizeRecipeName(%q) = %q, want %q", tc.in, got, tc.want)
+			}
+		})
+	}
+}
+
 func TestGetVersionLabelLocalDoesNotUseTimeoutLabel(t *testing.T) {
 	test.Setup()
 	t.Cleanup(func() { test.Teardown() })

pkg/secret/testdir/compose.yaml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   app:
-    image: nginx:1.21.0
+    image: nginx:1.31.1
     secrets:
       - test_pass_one
       - test_pass_two

tests/resources/test_recipe/compose.yml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   app:
-    image: nginx:1.29.0
+    image: nginx:1.31.1
     networks:
       - proxy
     deploy:

vendor/coopcloud.tech/tagcmp/.drone.yml

@@ -3,16 +3,16 @@ kind: pipeline
 name: coopcloud.tech/tagcmp
 steps:
   - name: gofmt
-    image: golang:1.21
+    image: golang:1.26
     commands:
       - test -z "$(gofmt -l .)"
 
   - name: go build
-    image: golang:1.21
+    image: golang:1.26
     commands:
       - go build -v .
 
   - name: go test
-    image: golang:1.21
+    image: golang:1.26
     commands:
       - go test . -cover

vendor/coopcloud.tech/tagcmp/renovate.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ]
+}

vendor/github.com/go-git/go-billy/v5/README.md

@@ -5,6 +5,10 @@ Billy implements an interface based on the `os` standard library, allowing to de
 
 Billy was born as part of [go-git/go-git](https://github.com/go-git/go-git) project.
 
+## Version support
+
+go-billy v5 is in maintenance mode. Users should upgrade to [go-billy v6](https://pkg.go.dev/github.com/go-git/go-billy/v6) where possible.
+
 ## Installation
 
 ```go

vendor/github.com/go-git/go-billy/v5/helper/chroot/chroot.go

@@ -3,19 +3,25 @@ package chroot
 import (
 	"errors"
 	"os"
+	"path"
 	"path/filepath"
 	"strings"
+	"syscall"
 
 	"github.com/go-git/go-billy/v5"
 	"github.com/go-git/go-billy/v5/helper/polyfill"
 )
 
 // ChrootHelper is a helper to implement billy.Chroot.
+// It is not a security boundary, callers that need containment should use a
+// filesystem implementation that enforces paths at the OS boundary instead.
 type ChrootHelper struct {
 	underlying billy.Filesystem
 	base       string
 }
 
+const maxFollowedSymlinks = 8 // Aligns with POSIX_SYMLOOP_MAX
+
 // New creates a new filesystem wrapping up the given 'fs'.
 // The created filesystem has its base in the given ChrootHelperectory of the
 // underlying filesystem.
@@ -34,15 +40,184 @@ func (fs *ChrootHelper) underlyingPath(filename string) (string, error) {
 	return fs.Join(fs.Root(), filename), nil
 }
 
-func isCrossBoundaries(path string) bool {
-	path = filepath.ToSlash(path)
-	path = filepath.Clean(path)
+func (fs *ChrootHelper) followedPath(filename string, followFinal bool, op string) (string, error) {
+	fullpath, err := fs.underlyingPath(filename)
+	if err != nil {
+		return "", err
+	}
 
-	return strings.HasPrefix(path, ".."+string(filepath.Separator))
+	sl, ok := fs.underlying.(billy.Symlink)
+	if !ok {
+		return fullpath, nil
+	}
+
+	rel, err := fs.relativeToRoot(fullpath)
+	if err != nil {
+		return "", err
+	}
+
+	fullpath, err = fs.resolveFollowedPath(rel, followFinal, op, sl)
+	if errors.Is(err, billy.ErrNotSupported) {
+		return fs.underlyingPath(filename)
+	}
+
+	return fullpath, err
+}
+
+func (fs *ChrootHelper) resolveFollowedPath(rel string, followFinal bool, op string, sl billy.Symlink) (string, error) {
+	if rel == "" {
+		return fs.resolveFollowedRoot(followFinal, op, sl)
+	}
+
+	parts := splitRelativePath(rel)
+	resolved := ""
+	followed := 0
+
+	for len(parts) > 0 {
+		part := parts[0]
+		parts = parts[1:]
+
+		currentRel := joinRelativePath(resolved, part)
+		currentPath := fs.Join(fs.Root(), currentRel)
+		if len(parts) == 0 && !followFinal {
+			return currentPath, nil
+		}
+
+		fi, err := sl.Lstat(currentPath)
+		if err != nil {
+			if os.IsNotExist(err) {
+				return fs.Join(fs.Root(), joinRelativePath(append([]string{currentRel}, parts...)...)), nil
+			}
+			return "", err
+		}
+
+		if fi.Mode()&os.ModeSymlink == 0 {
+			resolved = currentRel
+			continue
+		}
+
+		followed++
+		if followed > maxFollowedSymlinks {
+			return "", symlinkLoopError(op, currentPath)
+		}
+
+		target, err := sl.Readlink(currentPath)
+		if err != nil {
+			return "", err
+		}
+
+		targetRel, err := fs.linkTargetRel(currentPath, target)
+		if err != nil {
+			return "", err
+		}
+		if targetRel == currentRel {
+			return "", symlinkLoopError(op, currentPath)
+		}
+
+		parts = append(splitRelativePath(targetRel), parts...)
+		resolved = ""
+	}
+
+	return fs.Join(fs.Root(), resolved), nil
+}
+
+func symlinkLoopError(op, path string) error {
+	return &os.PathError{Op: op, Path: path, Err: syscall.ELOOP}
+}
+
+func (fs *ChrootHelper) resolveFollowedRoot(followFinal bool, op string, sl billy.Symlink) (string, error) {
+	root := fs.Join(fs.Root(), "")
+	if !followFinal {
+		return root, nil
+	}
+
+	fi, err := sl.Lstat(root)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return root, nil
+		}
+		return "", err
+	}
+
+	if fi.Mode()&os.ModeSymlink == 0 {
+		return root, nil
+	}
+
+	target, err := sl.Readlink(root)
+	if err != nil {
+		return "", err
+	}
+
+	targetRel, err := fs.linkTargetRel(root, target)
+	if err != nil {
+		return root, err
+	}
+	if targetRel == "" {
+		return "", symlinkLoopError(op, root)
+	}
+
+	return fs.resolveFollowedPath(targetRel, followFinal, op, sl)
+}
+
+func (fs *ChrootHelper) relativeToRoot(filename string) (string, error) {
+	rel, err := filepath.Rel(filepath.Clean(fs.Root()), filepath.Clean(filename))
+	if err != nil || isCrossBoundaries(rel) {
+		return "", billy.ErrCrossedBoundary
+	}
+
+	if rel == "." {
+		return "", nil
+	}
+	return rel, nil
+}
+
+func (fs *ChrootHelper) linkTargetRel(linkPath, target string) (string, error) {
+	target = filepath.FromSlash(target)
+	if filepath.IsAbs(target) || strings.HasPrefix(target, string(filepath.Separator)) {
+		return fs.relativeToRoot(target)
+	}
+
+	return fs.relativeToRoot(fs.Join(filepath.Dir(linkPath), target))
+}
+
+func splitRelativePath(filename string) []string {
+	filename = filepath.Clean(filename)
+	if filename == "" || filename == "." {
+		return nil
+	}
+
+	return strings.Split(filepath.ToSlash(filename), "/")
+}
+
+func joinRelativePath(elem ...string) string {
+	parts := make([]string, 0, len(elem))
+	for _, part := range elem {
+		if part == "" || part == "." {
+			continue
+		}
+		parts = append(parts, part)
+	}
+
+	if len(parts) == 0 {
+		return ""
+	}
+	return filepath.Join(parts...)
+}
+
+func isCreateExclusive(flag int) bool {
+	return flag&os.O_CREATE != 0 && flag&os.O_EXCL != 0
+}
+
+func isCrossBoundaries(name string) bool {
+	name = filepath.ToSlash(name)
+	name = strings.TrimLeft(name, "/")
+	name = path.Clean(name)
+
+	return name == ".." || strings.HasPrefix(name, "../")
 }
 
 func (fs *ChrootHelper) Create(filename string) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "create")
 	if err != nil {
 		return nil, err
 	}
@@ -56,7 +231,7 @@ func (fs *ChrootHelper) Create(filename string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) Open(filename string) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "open")
 	if err != nil {
 		return nil, err
 	}
@@ -70,7 +245,7 @@ func (fs *ChrootHelper) Open(filename string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) OpenFile(filename string, flag int, mode os.FileMode) (billy.File, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, !isCreateExclusive(flag), "open")
 	if err != nil {
 		return nil, err
 	}
@@ -84,12 +259,16 @@ func (fs *ChrootHelper) OpenFile(filename string, flag int, mode os.FileMode) (b
 }
 
 func (fs *ChrootHelper) Stat(filename string) (os.FileInfo, error) {
-	fullpath, err := fs.underlyingPath(filename)
+	fullpath, err := fs.followedPath(filename, true, "stat")
 	if err != nil {
 		return nil, err
 	}
 
-	return fs.underlying.Stat(fullpath)
+	fi, err := fs.underlying.Stat(fullpath)
+	if err != nil {
+		return nil, err
+	}
+	return fileInfo{FileInfo: fi, name: filepath.Base(filename)}, nil
 }
 
 func (fs *ChrootHelper) Rename(from, to string) error {
@@ -135,7 +314,7 @@ func (fs *ChrootHelper) TempFile(dir, prefix string) (billy.File, error) {
 }
 
 func (fs *ChrootHelper) ReadDir(path string) ([]os.FileInfo, error) {
-	fullpath, err := fs.underlyingPath(path)
+	fullpath, err := fs.followedPath(path, true, "readdir")
 	if err != nil {
 		return nil, err
 	}
@@ -241,6 +420,11 @@ type file struct {
 	name string
 }
 
+type fileInfo struct {
+	os.FileInfo
+	name string
+}
+
 func newFile(fs billy.Filesystem, f billy.File, filename string) billy.File {
 	filename = fs.Join(fs.Root(), filename)
 	filename, _ = filepath.Rel(fs.Root(), filename)
@@ -254,3 +438,7 @@ func newFile(fs billy.Filesystem, f billy.File, filename string) billy.File {
 func (f *file) Name() string {
 	return f.name
 }
+
+func (fi fileInfo) Name() string {
+	return fi.name
+}

vendor/github.com/go-git/go-billy/v5/osfs/os.go

@@ -24,6 +24,9 @@ var Default = &ChrootOS{}
 // New returns a new OS filesystem.
 // By default paths are deduplicated, but still enforced
 // under baseDir. For more info refer to WithDeduplicatePath.
+//
+// New returns ChrootOS by default for v5 compatibility. Users should prefer
+// New with WithBoundOS.
 func New(baseDir string, opts ...Option) billy.Filesystem {
 	o := &options{
 		deduplicatePath: true,
@@ -47,6 +50,8 @@ func WithBoundOS() Option {
 }
 
 // WithChrootOS returns the option of using a Chroot filesystem OS.
+//
+// Deprecated: use WithBoundOS instead.
 func WithChrootOS() Option {
 	return func(o *options) {
 		o.Type = ChrootOSFS

vendor/github.com/go-git/go-billy/v5/osfs/os_bound.go

@@ -20,6 +20,7 @@
 package osfs
 
 import (
+	"errors"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -29,6 +30,31 @@ import (
 	"github.com/go-git/go-billy/v5"
 )
 
+var (
+	// ErrBaseDirCannotBeRemoved is returned when removing the BoundOS base dir.
+	ErrBaseDirCannotBeRemoved = errors.New("base dir cannot be removed")
+
+	// ErrBaseDirCannotBeRenamed is returned when renaming the BoundOS base dir.
+	ErrBaseDirCannotBeRenamed = errors.New("base dir cannot be renamed")
+
+	dotPrefixes   = dotPathPrefixes()
+	dotSeparators = dotPathSeparators()
+)
+
+func dotPathPrefixes() []string {
+	if filepath.Separator == '\\' {
+		return []string{"./", ".\\"}
+	}
+	return []string{"./"}
+}
+
+func dotPathSeparators() string {
+	if filepath.Separator == '\\' {
+		return `/\`
+	}
+	return `/`
+}
+
 // BoundOS is a fs implementation based on the OS filesystem which is bound to
 // a base dir.
 // Prefer this fs implementation over ChrootOS.
@@ -54,6 +80,7 @@ func (fs *BoundOS) Create(filename string) (billy.File, error) {
 }
 
 func (fs *BoundOS) OpenFile(filename string, flag int, perm os.FileMode) (billy.File, error) {
+	filename = fs.expandDot(filename)
 	fn, err := fs.abs(filename)
 	if err != nil {
 		return nil, err
@@ -62,6 +89,7 @@ func (fs *BoundOS) OpenFile(filename string, flag int, perm os.FileMode) (billy.
 }
 
 func (fs *BoundOS) ReadDir(path string) ([]os.FileInfo, error) {
+	path = fs.expandDot(path)
 	dir, err := fs.abs(path)
 	if err != nil {
 		return nil, err
@@ -71,6 +99,12 @@ func (fs *BoundOS) ReadDir(path string) ([]os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Rename(from, to string) error {
+	if fs.isBaseDir(from) {
+		return ErrBaseDirCannotBeRenamed
+	}
+	from = fs.expandDot(from)
+	to = fs.expandDot(to)
+
 	f, err := fs.abs(from)
 	if err != nil {
 		return err
@@ -89,6 +123,7 @@ func (fs *BoundOS) Rename(from, to string) error {
 }
 
 func (fs *BoundOS) MkdirAll(path string, perm os.FileMode) error {
+	path = fs.expandDot(path)
 	dir, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -101,6 +136,7 @@ func (fs *BoundOS) Open(filename string) (billy.File, error) {
 }
 
 func (fs *BoundOS) Stat(filename string) (os.FileInfo, error) {
+	filename = fs.expandDot(filename)
 	filename, err := fs.abs(filename)
 	if err != nil {
 		return nil, err
@@ -109,6 +145,11 @@ func (fs *BoundOS) Stat(filename string) (os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Remove(filename string) error {
+	if fs.isBaseDir(filename) {
+		return ErrBaseDirCannotBeRemoved
+	}
+	filename = fs.expandDot(filename)
+
 	fn, err := fs.abs(filename)
 	if err != nil {
 		return err
@@ -122,6 +163,7 @@ func (fs *BoundOS) Remove(filename string) error {
 func (fs *BoundOS) TempFile(dir, prefix string) (billy.File, error) {
 	if dir != "" {
 		var err error
+		dir = fs.expandDot(dir)
 		dir, err = fs.abs(dir)
 		if err != nil {
 			return nil, err
@@ -144,6 +186,11 @@ func (fs *BoundOS) Join(elem ...string) string {
 }
 
 func (fs *BoundOS) RemoveAll(path string) error {
+	if fs.isBaseDir(path) {
+		return ErrBaseDirCannotBeRemoved
+	}
+	path = fs.expandDot(path)
+
 	dir, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -152,6 +199,7 @@ func (fs *BoundOS) RemoveAll(path string) error {
 }
 
 func (fs *BoundOS) Symlink(target, link string) error {
+	link = fs.expandDot(link)
 	ln, err := fs.abs(link)
 	if err != nil {
 		return err
@@ -164,6 +212,7 @@ func (fs *BoundOS) Symlink(target, link string) error {
 }
 
 func (fs *BoundOS) Lstat(filename string) (os.FileInfo, error) {
+	filename = fs.expandDot(filename)
 	filename = filepath.Clean(filename)
 	if !filepath.IsAbs(filename) {
 		filename = filepath.Join(fs.baseDir, filename)
@@ -175,6 +224,7 @@ func (fs *BoundOS) Lstat(filename string) (os.FileInfo, error) {
 }
 
 func (fs *BoundOS) Readlink(link string) (string, error) {
+	link = fs.expandDot(link)
 	if !filepath.IsAbs(link) {
 		link = filepath.Clean(filepath.Join(fs.baseDir, link))
 	}
@@ -185,6 +235,7 @@ func (fs *BoundOS) Readlink(link string) (string, error) {
 }
 
 func (fs *BoundOS) Chmod(path string, mode os.FileMode) error {
+	path = fs.expandDot(path)
 	abspath, err := fs.abs(path)
 	if err != nil {
 		return err
@@ -199,7 +250,7 @@ func (fs *BoundOS) Chroot(path string) (billy.Filesystem, error) {
 	if err != nil {
 		return nil, err
 	}
-	return New(joined), nil
+	return New(joined, WithBoundOS()), nil
 }
 
 // Root returns the current base dir of the billy.Filesystem.
@@ -220,6 +271,37 @@ func (fs *BoundOS) createDir(fullpath string) error {
 	return nil
 }
 
+func (fs *BoundOS) expandDot(path string) string {
+	if path == "." {
+		return fs.baseDir
+	}
+	for _, prefix := range dotPrefixes {
+		if strings.HasPrefix(path, prefix) {
+			path = strings.TrimLeft(strings.TrimPrefix(path, prefix), dotSeparators)
+			if path == "" {
+				return fs.baseDir
+			}
+			return path
+		}
+	}
+	return path
+}
+
+func (fs *BoundOS) isBaseDir(path string) bool {
+	if path == "" || filepath.Clean(path) == "." {
+		return true
+	}
+	path = fs.expandDot(path)
+	if filepath.Clean(path) == filepath.Clean(fs.baseDir) {
+		return true
+	}
+	abspath, err := fs.abs(path)
+	if err != nil {
+		return false
+	}
+	return filepath.Clean(abspath) == filepath.Clean(fs.baseDir)
+}
+
 // abs transforms filename to an absolute path, taking into account the base dir.
 // Relative paths won't be allowed to ascend the base dir, so `../file` will become
 // `/working-dir/file`.
@@ -233,7 +315,7 @@ func (fs *BoundOS) abs(filename string) (string, error) {
 
 	path, err := securejoin.SecureJoin(fs.baseDir, filename)
 	if err != nil {
-		return "", nil
+		return "", err
 	}
 
 	if fs.deduplicatePath {
@@ -246,24 +328,12 @@ func (fs *BoundOS) abs(filename string) (string, error) {
 	return path, nil
 }
 
-// insideBaseDir checks whether filename is located within
-// the fs.baseDir.
-func (fs *BoundOS) insideBaseDir(filename string) (bool, error) {
-	if filename == fs.baseDir {
-		return true, nil
-	}
-	if !strings.HasPrefix(filename, fs.baseDir+string(filepath.Separator)) {
-		return false, fmt.Errorf("path outside base dir")
-	}
-	return true, nil
-}
-
 // insideBaseDirEval checks whether filename is contained within
 // a dir that is within the fs.baseDir, by first evaluating any symlinks
 // that either filename or fs.baseDir may contain.
 func (fs *BoundOS) insideBaseDirEval(filename string) (bool, error) {
 	// "/" contains all others.
-	if fs.baseDir == "/" {
+	if fs.baseDir == "/" || fs.baseDir == filename {
 		return true, nil
 	}
 	dir, err := filepath.EvalSymlinks(filepath.Dir(filename))

vendor/github.com/go-git/go-billy/v5/osfs/os_chroot.go

@@ -14,6 +14,8 @@ import (
 // ChrootOS is a legacy filesystem based on a "soft chroot" of the os filesystem.
 // Although this is still the default os filesystem, consider using BoundOS instead.
 //
+// Deprecated: use New with WithBoundOS instead.
+//
 // Behaviours of note:
 //  1. A "soft chroot" translates the base dir to "/" for the purposes of the
 //     fs abstraction.
@@ -24,6 +26,14 @@ import (
 type ChrootOS struct{}
 
 func newChrootOS(baseDir string) billy.Filesystem {
+	if baseDir != "" {
+		resolved, err := filepath.EvalSymlinks(baseDir)
+		if err != nil {
+			return chroot.New(&ChrootOS{}, baseDir)
+		}
+		baseDir = resolved
+	}
+
 	return chroot.New(&ChrootOS{}, baseDir)
 }
 

vendor/github.com/go-git/go-billy/v5/util/util.go

@@ -16,8 +16,6 @@ import (
 // can but returns the first error it encounters. If the path does not exist,
 // RemoveAll returns nil (no error).
 func RemoveAll(fs billy.Basic, path string) error {
-	fs, path = getUnderlyingAndPath(fs, path)
-
 	if r, ok := fs.(removerAll); ok {
 		return r.RemoveAll(path)
 	}
@@ -39,7 +37,7 @@ func removeAll(fs billy.Basic, path string) error {
 	}
 
 	// Otherwise, is this a directory we need to recurse into?
-	dir, serr := fs.Stat(path)
+	dir, serr := lstat(fs, path)
 	if serr != nil {
 		if errors.Is(serr, os.ErrNotExist) {
 			return nil
@@ -48,8 +46,8 @@ func removeAll(fs billy.Basic, path string) error {
 		return serr
 	}
 
-	if !dir.IsDir() {
-		// Not a directory; return the error from Remove.
+	if dir.Mode()&os.ModeSymlink != 0 || !dir.IsDir() {
+		// Not a directory we should recurse into; return the error from Remove.
 		return err
 	}
 
@@ -62,7 +60,7 @@ func removeAll(fs billy.Basic, path string) error {
 	fis, err := dirfs.ReadDir(path)
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
-			// Race. It was deleted between the Lstat and Open.
+			// Race. It was deleted between the Lstat and ReadDir.
 			// Return nil per RemoveAll's docs.
 			return nil
 		}
@@ -91,7 +89,18 @@ func removeAll(fs billy.Basic, path string) error {
 	}
 
 	return err
+}
 
+func lstat(filesystem billy.Basic, path string) (os.FileInfo, error) {
+	if sl, ok := filesystem.(billy.Symlink); ok {
+		// Avoid following a symlink substituted after the initial Remove fails.
+		fi, err := sl.Lstat(path)
+		if err == nil || !errors.Is(err, billy.ErrNotSupported) {
+			return fi, err
+		}
+	}
+
+	return filesystem.Stat(path)
 }
 
 // WriteFile writes data to a file named by filename in the given filesystem.
@@ -123,8 +132,10 @@ func WriteFile(fs billy.Basic, filename string, data []byte, perm os.FileMode) (
 // We generate random temporary file names so that there's a good
 // chance the file doesn't exist yet - keeps the number of tries in
 // TempFile to a minimum.
-var rand uint32
-var randmu sync.Mutex
+var (
+	rand   uint32
+	randmu sync.Mutex
+)
 
 func reseed() uint32 {
 	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
@@ -220,22 +231,6 @@ func getTempDir(fs billy.Basic) string {
 	return ".tmp"
 }
 
-type underlying interface {
-	Underlying() billy.Basic
-}
-
-func getUnderlyingAndPath(fs billy.Basic, path string) (billy.Basic, string) {
-	u, ok := fs.(underlying)
-	if !ok {
-		return fs, path
-	}
-	if ch, ok := fs.(billy.Chroot); ok {
-		path = fs.Join(ch.Root(), path)
-	}
-
-	return u.Underlying(), path
-}
-
 // ReadFile reads the named file and returns the contents from the given filesystem.
 // A successful call returns err == nil, not err == EOF.
 // Because ReadFile reads the whole file, it does not treat an EOF from Read

vendor/github.com/go-git/go-git/v5/config/config.go

@@ -61,6 +61,16 @@ type Config struct {
 		CommentChar string
 		// RepositoryFormatVersion identifies the repository format and layout version.
 		RepositoryFormatVersion format.RepositoryFormatVersion
+		// ProtectNTFS controls whether NTFS-specific path protections are
+		// applied (e.g. rejecting .git trailing spaces/periods, alternate
+		// data streams, 8.3 short names). When unset, defaults to true on
+		// Windows.
+		ProtectNTFS OptBool
+		// ProtectHFS controls whether HFS+-specific path protections are
+		// applied (e.g. rejecting .git with Unicode zero-width or
+		// directional characters that HFS+ would normalize away).
+		// When unset, defaults to true on macOS.
+		ProtectHFS OptBool
 	}
 
 	User struct {
@@ -266,6 +276,8 @@ const (
 	repositoryFormatVersionKey = "repositoryformatversion"
 	objectFormat               = "objectformat"
 	mirrorKey                  = "mirror"
+	protectNTFSKey             = "protectNTFS"
+	protectHFSKey              = "protectHFS"
 
 	// DefaultPackWindow holds the number of previous objects used to
 	// generate deltas. The value 10 is the same used by git command.
@@ -309,6 +321,14 @@ func (c *Config) unmarshalCore() {
 
 	c.Core.Worktree = s.Options.Get(worktreeKey)
 	c.Core.CommentChar = s.Options.Get(commentCharKey)
+
+	if parsed := parseConfigBool(s.Options.Get(protectNTFSKey)); parsed.IsSet() {
+		c.Core.ProtectNTFS = parsed
+	}
+
+	if parsed := parseConfigBool(s.Options.Get(protectHFSKey)); parsed.IsSet() {
+		c.Core.ProtectHFS = parsed
+	}
 }
 
 func (c *Config) unmarshalUser() {
@@ -379,7 +399,8 @@ func unmarshalSubmodules(fc *format.Config, submodules map[string]*Submodule) {
 		m := &Submodule{}
 		m.unmarshal(sub)
 
-		if m.Validate() == ErrModuleBadPath {
+		if err := m.Validate(); errors.Is(err, ErrModuleBadPath) ||
+			errors.Is(err, ErrModuleBadName) {
 			continue
 		}
 
@@ -436,6 +457,14 @@ func (c *Config) marshalCore() {
 	if c.Core.Worktree != "" {
 		s.SetOption(worktreeKey, c.Core.Worktree)
 	}
+
+	if c.Core.ProtectNTFS.IsSet() {
+		s.SetOption(protectNTFSKey, c.Core.ProtectNTFS.FormatBool())
+	}
+
+	if c.Core.ProtectHFS.IsSet() {
+		s.SetOption(protectHFSKey, c.Core.ProtectHFS.FormatBool())
+	}
 }
 
 func (c *Config) marshalExtensions() {

vendor/github.com/go-git/go-git/v5/config/modules.go

@@ -3,8 +3,11 @@ package config
 import (
 	"bytes"
 	"errors"
+	"fmt"
 	"regexp"
+	"strings"
 
+	"github.com/go-git/go-git/v5/internal/pathutil"
 	format "github.com/go-git/go-git/v5/plumbing/format/config"
 )
 
@@ -12,6 +15,7 @@ var (
 	ErrModuleEmptyURL  = errors.New("module config: empty URL")
 	ErrModuleEmptyPath = errors.New("module config: empty path")
 	ErrModuleBadPath   = errors.New("submodule has an invalid path")
+	ErrModuleBadName   = errors.New("ignoring suspicious submodule name")
 )
 
 var (
@@ -94,6 +98,10 @@ type Submodule struct {
 
 // Validate validates the fields and sets the default values.
 func (m *Submodule) Validate() error {
+	if err := validSubmoduleName(m.Name); err != nil {
+		return fmt.Errorf("%w: %q", ErrModuleBadName, m.Name)
+	}
+
 	if m.Path == "" {
 		return ErrModuleEmptyPath
 	}
@@ -109,6 +117,50 @@ func (m *Submodule) Validate() error {
 	return nil
 }
 
+// validSubmoduleName mirrors canonical Git's check_submodule_name in
+// submodule-config.c [1]: reject empty names and any name with a ".."
+// path component, using both '/' and '\\' as separators so the rule
+// is consistent across platforms. The component check is delegated to
+// `pathutil.IsHFSDot` and `pathutil.IsNTFSDot` with `.` as the needle,
+// which both cover the bare ".." case and reject components that
+// resolve to ".." after HFS+ Unicode normalisation (ignored code
+// points, e.g. `.<U+200C>.`) or NTFS trailing-space/dot/ADS
+// canonicalisation (e.g. `.. `, `..::$INDEX_ALLOCATION`).
+// `.gitmodules` is attacker-controlled by definition, so both checks
+// run unconditionally regardless of host OS.
+//
+// The additional checks (bare ".", NUL byte, leading or trailing
+// separator, drive-letter prefix) close go-git-specific edge cases
+// the canonical loop does not exercise: canonical Git treats names
+// as opaque C strings, while Go strings carry NULs through and the
+// billy filesystem layer is path-aware in ways Git's working storage
+// is not.
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/submodule-config.c#L214-L237
+func validSubmoduleName(name string) error {
+	if name == "" || name == "." {
+		return ErrModuleBadName
+	}
+	for _, seg := range strings.FieldsFunc(name, isPathSep) {
+		if pathutil.IsHFSDot(seg, ".") || pathutil.IsNTFSDot(seg, ".", "") {
+			return ErrModuleBadName
+		}
+	}
+	// go-git-specific defensive checks beyond canonical Git.
+	if strings.ContainsRune(name, 0) {
+		return ErrModuleBadName
+	}
+	if isPathSep(rune(name[0])) || isPathSep(rune(name[len(name)-1])) {
+		return ErrModuleBadName
+	}
+	if len(name) >= 2 && name[1] == ':' {
+		return ErrModuleBadName
+	}
+	return nil
+}
+
+func isPathSep(r rune) bool { return r == '/' || r == '\\' }
+
 func (m *Submodule) unmarshal(s *format.Subsection) {
 	m.raw = s
 

vendor/github.com/go-git/go-git/v5/config/optbool.go

@@ -0,0 +1,82 @@
+package config
+
+import (
+	"strconv"
+	"strings"
+)
+
+// OptBool is a tri-state boolean: unset, explicitly false, or explicitly true.
+// Its zero value (OptBoolUnset) means the setting was not specified, which
+// allows merge logic based on reflect.Value.IsZero to skip unset fields while
+// still letting an explicit "false" override a previously set "true".
+type OptBool byte
+
+const (
+	// OptBoolUnset indicates the setting was not specified.
+	OptBoolUnset OptBool = iota
+	// OptBoolFalse indicates the setting was explicitly set to false.
+	OptBoolFalse
+	// OptBoolTrue indicates the setting was explicitly set to true.
+	OptBoolTrue
+)
+
+// NewOptBool converts a plain bool into an OptBool.
+func NewOptBool(v bool) OptBool {
+	if v {
+		return OptBoolTrue
+	}
+	return OptBoolFalse
+}
+
+// IsTrue returns whether the value is explicitly true.
+func (o OptBool) IsTrue() bool { return o == OptBoolTrue }
+
+// IsSet returns whether the value was explicitly specified (true or false).
+func (o OptBool) IsSet() bool { return o != OptBoolUnset }
+
+func (o OptBool) String() string {
+	switch o {
+	case OptBoolTrue:
+		return "true"
+	case OptBoolFalse:
+		return "false"
+	default:
+		return "unset"
+	}
+}
+
+// FormatBool returns the strconv-formatted value. Only meaningful when IsSet.
+func (o OptBool) FormatBool() string {
+	return strconv.FormatBool(o.IsTrue())
+}
+
+// parseConfigBool mirrors upstream Git's git_parse_maybe_bool: it
+// accepts true/yes/on (→ OptBoolTrue) and false/no/off (→
+// OptBoolFalse) case-insensitively, plus any decimal integer (zero
+// → OptBoolFalse, non-zero → OptBoolTrue). Empty or otherwise
+// unrecognised values return OptBoolUnset, leaving the caller's
+// platform default in place. The empty-string handling is the only
+// intentional divergence from upstream, which returns false for
+// empty: in our unmarshalCore caller, an empty value means the key
+// is unset and the platform default should apply.
+//
+// Reference: upstream Git git_parse_maybe_bool_text at parse.c
+// L157-L173 and git_parse_maybe_bool at parse.c L174-L182 in tag
+// v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/parse.c#L157-L182
+func parseConfigBool(v string) OptBool {
+	switch strings.ToLower(v) {
+	case "true", "yes", "on":
+		return OptBoolTrue
+	case "false", "no", "off":
+		return OptBoolFalse
+	}
+	if i, err := strconv.Atoi(v); err == nil {
+		if i != 0 {
+			return OptBoolTrue
+		}
+		return OptBoolFalse
+	}
+	return OptBoolUnset
+}

vendor/github.com/go-git/go-git/v5/internal/pathutil/dotgit.go

@@ -0,0 +1,21 @@
+package pathutil
+
+import "strings"
+
+// IsDotGitName reports whether name is `.git` or its 8.3 NTFS short
+// alias `git~1`, case-insensitively. Both are forbidden as path
+// components (and as submodule names) because they refer to the
+// repository's own metadata directory.
+//
+// File names that do not conform to the 8.3 format (up to eight
+// characters for the basename, three for the file extension) are
+// associated with a so-called "short name" on NTFS — at least on
+// the `C:` drive by default — which means that `git~1/` is a valid
+// way to refer to `.git/`.
+func IsDotGitName(name string) bool {
+	switch strings.ToLower(name) {
+	case ".git", "git~1":
+		return true
+	}
+	return false
+}

vendor/github.com/go-git/go-git/v5/internal/pathutil/hfs.go

@@ -0,0 +1,99 @@
+package pathutil
+
+import "unicode"
+
+// hfsIgnoredCodepoints contains Unicode code points that HFS+ ignores
+// during path normalization. A path component containing these
+// characters between the bytes of ".git" (or ".gitmodules", etc.)
+// will be treated as that name by HFS+, so they have to be filtered
+// out before comparison.
+//
+// See upstream Git utf8.c next_hfs_char in tag v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/utf8.c#L703-L740
+var hfsIgnoredCodepoints = map[rune]struct{}{
+	0x200c: {}, // ZERO WIDTH NON-JOINER
+	0x200d: {}, // ZERO WIDTH JOINER
+	0x200e: {}, // LEFT-TO-RIGHT MARK
+	0x200f: {}, // RIGHT-TO-LEFT MARK
+	0x202a: {}, // LEFT-TO-RIGHT EMBEDDING
+	0x202b: {}, // RIGHT-TO-LEFT EMBEDDING
+	0x202c: {}, // POP DIRECTIONAL FORMATTING
+	0x202d: {}, // LEFT-TO-RIGHT OVERRIDE
+	0x202e: {}, // RIGHT-TO-LEFT OVERRIDE
+	0x206a: {}, // INHIBIT SYMMETRIC SWAPPING
+	0x206b: {}, // ACTIVATE SYMMETRIC SWAPPING
+	0x206c: {}, // INHIBIT ARABIC FORM SHAPING
+	0x206d: {}, // ACTIVATE ARABIC FORM SHAPING
+	0x206e: {}, // NATIONAL DIGIT SHAPES
+	0x206f: {}, // NOMINAL DIGIT SHAPES
+	0xfeff: {}, // ZERO WIDTH NO-BREAK SPACE
+}
+
+// IsHFSDot reports whether part would be treated as ".<needle>" on an
+// HFS+ filesystem after stripping ignored Unicode code points and
+// folding ASCII to lower case. The needle is the lowercase ASCII
+// suffix without the leading dot (e.g. "git", "gitmodules"). It
+// mirrors upstream Git's is_hfs_dot_generic and is the building
+// block of IsHFSDotGit / IsHFSDotGitmodules.
+//
+// Reference: upstream Git utf8.c is_hfs_dot_generic at L741-L774 and
+// the dotgit family at L784-L809 in tag v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/utf8.c#L741-L809
+func IsHFSDot(part, needle string) bool {
+	runes := []rune(part)
+	i := 0
+
+	// skip ignored code points, then expect '.'
+	for i < len(runes) {
+		if _, ok := hfsIgnoredCodepoints[runes[i]]; !ok {
+			break
+		}
+		i++
+	}
+	if i >= len(runes) || runes[i] != '.' {
+		return false
+	}
+	i++
+
+	// match needle case-insensitively, skipping ignored code points
+	for _, expected := range needle {
+		for i < len(runes) {
+			if _, ok := hfsIgnoredCodepoints[runes[i]]; !ok {
+				break
+			}
+			i++
+		}
+		if i >= len(runes) {
+			return false
+		}
+		r := runes[i]
+		if r > 127 {
+			return false
+		}
+		if unicode.ToLower(r) != expected {
+			return false
+		}
+		i++
+	}
+
+	// skip trailing ignored code points
+	for i < len(runes) {
+		if _, ok := hfsIgnoredCodepoints[runes[i]]; !ok {
+			break
+		}
+		i++
+	}
+
+	// must be at end of component
+	return i == len(runes)
+}
+
+// IsHFSDotGit reports whether part is an HFS+ equivalent of ".git".
+func IsHFSDotGit(part string) bool { return IsHFSDot(part, "git") }
+
+// IsHFSDotGitmodules reports whether part is an HFS+ equivalent of
+// ".gitmodules", catching attempts to plant the file via Unicode
+// code points that HFS+ would strip during normalisation.
+func IsHFSDotGitmodules(part string) bool { return IsHFSDot(part, "gitmodules") }

vendor/github.com/go-git/go-git/v5/internal/pathutil/ntfs.go

@@ -0,0 +1,187 @@
+package pathutil
+
+import "strings"
+
+// IsNTFSDotGit ports upstream Git's is_ntfs_dotgit. It detects path
+// components that NTFS would resolve to ".git": the canonical name
+// itself and its 8.3 short-name alias "git~1", each followed by any
+// number of trailing spaces or periods (which NTFS silently trims)
+// and an optional Alternate Data Stream suffix (":<stream>"). The
+// bare strings ".git" and "git~1" also match, mirroring upstream.
+//
+// Reference: upstream Git path.c is_ntfs_dotgit at L1415-L1449
+// in tag v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/path.c#L1415-L1449
+func IsNTFSDotGit(part string) bool {
+	var i int
+	switch {
+	case len(part) >= 4 && part[0] == '.' &&
+		asciiToLower(part[1]) == 'g' &&
+		asciiToLower(part[2]) == 'i' &&
+		asciiToLower(part[3]) == 't':
+		i = 4
+	case len(part) >= 5 &&
+		asciiToLower(part[0]) == 'g' &&
+		asciiToLower(part[1]) == 'i' &&
+		asciiToLower(part[2]) == 't' &&
+		part[3] == '~' && part[4] == '1':
+		i = 5
+	default:
+		return false
+	}
+
+	for ; i < len(part); i++ {
+		c := part[i]
+		if c == ':' {
+			return true
+		}
+		if c != '.' && c != ' ' {
+			return false
+		}
+	}
+	return true
+}
+
+// WindowsValidPath reports whether part is a valid Windows / NTFS
+// path component for the worktree filesystem abstraction. It rejects
+// NTFS-disguised variants of `.git` and `git~1` (trailing spaces,
+// periods, Alternate Data Streams) and Windows reserved device
+// names. Bare `.git` and `git~1` are allowed at this layer; the
+// caller decides whether they are permissible at the current path
+// position.
+func WindowsValidPath(part string) bool {
+	if IsNTFSDotGit(part) && !IsDotGitName(part) {
+		return false
+	}
+	return !isWindowsReservedName(part)
+}
+
+// windowsReservedNames lists the Windows reserved device names.
+// A path component is reserved if its base name (ignoring trailing
+// spaces, extensions, and NTFS Alternate Data Streams) matches one of
+// these case-insensitively.
+//
+// See upstream Git compat/mingw.c is_valid_win32_path().
+var windowsReservedNames = []string{
+	"CON", "PRN", "AUX", "NUL",
+	"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
+	"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
+	"CONIN$", "CONOUT$",
+}
+
+func isWindowsReservedName(part string) bool {
+	for _, name := range windowsReservedNames {
+		if len(part) < len(name) {
+			continue
+		}
+		if !strings.EqualFold(part[:len(name)], name) {
+			continue
+		}
+		// Exact match or followed by space, dot, colon (ADS), or separator.
+		if len(part) == len(name) {
+			return true
+		}
+		switch part[len(name)] {
+		case ' ', '.', ':':
+			return true
+		}
+	}
+	return false
+}
+
+// IsNTFSDot ports upstream Git's is_ntfs_dot_generic. It detects NTFS
+// path-component variants of a dotfile name that attackers can use to
+// bypass case-insensitive comparisons against the canonical name on
+// Windows. The dotgit parameter is the lowercase name without the
+// leading dot (e.g. "gitmodules"); shortnamePrefix is the canonical
+// 6-character NTFS short-name prefix used as a fall-back match
+// (e.g. "gi7eba" for ".gitmodules").
+//
+// Reference: upstream Git path.c is_ntfs_dot_generic at L1451-L1507
+// in tag v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/path.c#L1451-L1507
+func IsNTFSDot(name, dotgit, shortnamePrefix string) bool {
+	// onlySpacesAndPeriods returns true when the suffix from start
+	// onwards consists only of trailing spaces and periods, possibly
+	// terminated by a NTFS Alternate Data Stream colon. Mirrors the
+	// only_spaces_and_periods label in upstream's is_ntfs_dot_generic.
+	onlySpacesAndPeriods := func(start int) bool {
+		for i := start; i < len(name); i++ {
+			c := name[i]
+			if c == ':' {
+				return true
+			}
+			if c != ' ' && c != '.' {
+				return false
+			}
+		}
+		return true
+	}
+
+	// Pattern 1: ".<dotgit>" prefix + trailing spaces / periods / ADS.
+	if len(name) >= len(dotgit)+1 && name[0] == '.' &&
+		strings.EqualFold(name[1:1+len(dotgit)], dotgit) {
+		if onlySpacesAndPeriods(len(dotgit) + 1) {
+			return true
+		}
+	}
+
+	// Pattern 2: standard NTFS short name <dotgit[:6]>~[1-4].
+	if len(dotgit) >= 6 && len(name) >= 8 &&
+		strings.EqualFold(name[:6], dotgit[:6]) &&
+		name[6] == '~' && name[7] >= '1' && name[7] <= '4' {
+		if onlySpacesAndPeriods(8) {
+			return true
+		}
+	}
+
+	// Pattern 3: fall-back NTFS short name keyed by shortnamePrefix.
+	if len(shortnamePrefix) < 6 || len(name) < 8 {
+		return false
+	}
+	sawTilde := false
+	i := 0
+	for i < 8 {
+		c := name[i]
+		switch {
+		case sawTilde:
+			if c < '0' || c > '9' {
+				return false
+			}
+		case c == '~':
+			i++
+			if i >= len(name) || name[i] < '1' || name[i] > '9' {
+				return false
+			}
+			sawTilde = true
+		case i >= 6:
+			return false
+		case c&0x80 != 0:
+			return false
+		default:
+			if asciiToLower(c) != shortnamePrefix[i] {
+				return false
+			}
+		}
+		i++
+	}
+	return onlySpacesAndPeriods(8)
+}
+
+// IsNTFSDotGitmodules reports whether part is an NTFS-equivalent of
+// ".gitmodules" — the file name (or any of its variants that NTFS
+// would resolve to it) that attackers can use to plant submodule
+// configuration disguised as a symlink. The 6-character canonical
+// short-name prefix "gi7eba" mirrors upstream Git's is_ntfs_dotgitmodules.
+func IsNTFSDotGitmodules(part string) bool {
+	return IsNTFSDot(part, "gitmodules", "gi7eba")
+}
+
+func asciiToLower(c byte) byte {
+	if c >= 'A' && c <= 'Z' {
+		return c + ('a' - 'A')
+	}
+	return c
+}

vendor/github.com/go-git/go-git/v5/internal/pathutil/tree.go

@@ -0,0 +1,66 @@
+package pathutil
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
+
+// ErrInvalidPath is returned by ValidTreePath when its argument is
+// not a safe path to materialise into the worktree.
+var ErrInvalidPath = fmt.Errorf("invalid path")
+
+// ValidTreePath rejects path strings that, if materialised into a
+// worktree, would let an attacker-controlled tree entry escape the
+// worktree or rewrite repository metadata. It rejects:
+//
+//   - control characters (< 0x20, 0x7f);
+//   - empty paths and "." / ".." components;
+//   - Windows volume name prefixes (e.g. C:);
+//   - .git, its 8.3 NTFS short-name git~1, plus their HFS+ and NTFS
+//     variants — at every position, not just the root.
+//
+// HFS+/NTFS variants of `.git` are always rejected at this layer
+// regardless of runtime config: tree paths are canonical UTF-8 with
+// no zero-width characters or NTFS short-name forms, so an entry
+// that looks like a disguised `.git` is suspicious anywhere. Windows
+// reserved device names (CON, NUL, etc.) are not policed here — they
+// are legitimate filenames on non-Windows filesystems and upstream
+// Git accepts them. The wrapper layer (validPath in package git)
+// rejects them at materialisation time when core.protectNTFS is on.
+//
+// Mirrors upstream Git's verify_path_internal at read-cache.c#L987
+// in tag v2.54.0[1] with protect_hfs / protect_ntfs treated as
+// always-on for `.git`-disguise detection (tree paths are not
+// application-supplied) and is_valid_win32_path left to the wrapper.
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/read-cache.c#L987
+func ValidTreePath(p string) error {
+	for i := 0; i < len(p); i++ {
+		if p[i] < 0x20 || p[i] == 0x7f {
+			return fmt.Errorf("%w %q: contains control character", ErrInvalidPath, p)
+		}
+	}
+
+	parts := strings.FieldsFunc(p, func(r rune) bool { return r == '\\' || r == '/' })
+	if len(parts) == 0 {
+		return fmt.Errorf("%w: %q", ErrInvalidPath, p)
+	}
+
+	// Volume names are not supported, in both formats: \\ and <DRIVE_LETTER>:.
+	if vol := filepath.VolumeName(p); vol != "" {
+		return fmt.Errorf("%w: %q", ErrInvalidPath, p)
+	}
+
+	for _, part := range parts {
+		if part == "." || part == ".." {
+			return fmt.Errorf("%w %q: cannot use %q", ErrInvalidPath, p, part)
+		}
+
+		if IsDotGitName(part) || IsHFSDotGit(part) || IsNTFSDotGit(part) {
+			return fmt.Errorf("%w component: %q", ErrInvalidPath, p)
+		}
+	}
+
+	return nil
+}

vendor/github.com/go-git/go-git/v5/internal/url/url.go

@@ -2,12 +2,14 @@ package url
 
 import (
 	"regexp"
+	"runtime"
+	"strings"
 )
 
 var (
 	isSchemeRegExp = regexp.MustCompile(`^[^:]+://`)
 
-	// Ref: https://github.com/git/git/blob/master/Documentation/urls.txt#L37
+	// Ref: https://github.com/git/git/blob/v2.54.0/Documentation/urls.adoc#L41-L48
 	scpLikeUrlRegExp = regexp.MustCompile(`^(?:(?P<user>[^@]+)@)?(?P<host>[^:\s]+):(?:(?P<port>[0-9]{1,5}):)?(?P<path>[^\\].*)$`)
 )
 
@@ -20,7 +22,38 @@ func MatchesScheme(url string) bool {
 // MatchesScpLike returns true if the given string matches an SCP-like
 // format scheme.
 func MatchesScpLike(url string) bool {
-	return scpLikeUrlRegExp.MatchString(url)
+	if !scpLikeUrlRegExp.MatchString(url) {
+		return false
+	}
+	// Mirror canonical Git's url_is_local_not_ssh in connect.c[1] for
+	// the cases the regex above cannot disambiguate by itself: a URL
+	// is treated as a local path (not SCP-style SSH) when a `/`
+	// precedes the first `:` (e.g. `./relative:path`,
+	// `/abs/with:colon/file`), or — on Windows only — when it has a
+	// DOS drive prefix like `C:foo` where the host is a single
+	// ASCII letter.
+	//
+	// [1]: https://github.com/git/git/blob/v2.54.0/connect.c#L710-L716
+	if before, _, _ := strings.Cut(url, ":"); strings.Contains(before, "/") {
+		return false
+	}
+	if runtime.GOOS == "windows" && hasDosDrivePrefix(url) {
+		return false
+	}
+	return true
+}
+
+// hasDosDrivePrefix reports whether s begins with `<letter>:` (a
+// Windows drive prefix such as `C:` or `c:`). Mirrors canonical Git's
+// win32_has_dos_drive_prefix[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/compat/win32/path-utils.c#L20-L29
+func hasDosDrivePrefix(s string) bool {
+	if len(s) < 2 || s[1] != ':' {
+		return false
+	}
+	c := s[0]
+	return ('A' <= c && c <= 'Z') || ('a' <= c && c <= 'z')
 }
 
 // FindScpLikeComponents returns the user, host, port and path of the

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/decoder.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"io/fs"
 
 	"github.com/go-git/go-git/v5/plumbing/hash"
 	"github.com/go-git/go-git/v5/utils/binary"
@@ -25,35 +26,88 @@ const (
 	objectIDLength = hash.Size
 )
 
+// Byte sizes of the idx v2 layout elements, used by the size formula
+// in [validateIdxV2Size]. See [gitformat-pack] for the canonical
+// layout.
+//
+// [gitformat-pack]: https://git-scm.com/docs/gitformat-pack
+const (
+	headerLen     = 8          // magic + version
+	fanoutLen     = fanout * 4 // uint32 per bucket
+	crc32Len      = 4          // CRC32 per object
+	offset32Len   = 4          // 32-bit offset per object
+	offset64Len   = 8          // 64-bit overflow offset
+	trailerHashes = 2          // pack checksum + idx checksum, each hashsz
+)
+
+// statInput is the optional shape the [Decoder] probes for at the
+// start of [Decoder.Decode] to learn the on-disk length of the idx
+// blob, which it uses to validate the canonical-Git size formula
+// before any allocations driven by the fanout table. Callers that
+// pass an [*os.File] or a `billy.File` backed by an `*os.File`
+// (the production call sites in `storage/filesystem`) satisfy it
+// directly; arbitrary [io.Reader]s do not, and decode for them
+// retains the pre-existing behaviour of erroring out at the
+// truncated-payload boundary instead.
+//
+// The interface is intentionally unexported so the public
+// [NewDecoder] signature stays compatible with v5.
+type statInput interface {
+	Stat() (fs.FileInfo, error)
+}
+
 // Decoder reads and decodes idx files from an input stream.
 type Decoder struct {
 	io.Reader
-	h hash.Hash
+	src io.Reader
+	h   hash.Hash
 }
 
 // NewDecoder builds a new idx stream decoder, that reads from r.
 func NewDecoder(r io.Reader) *Decoder {
 	h := hash.New(crypto.SHA1)
 	tr := io.TeeReader(r, h)
-	return &Decoder{tr, h}
+	return &Decoder{tr, r, h}
 }
 
 // Decode reads from the stream and decode the content into the MemoryIndex struct.
 func (d *Decoder) Decode(idx *MemoryIndex) error {
+	idxSize := int64(-1)
+	if in, ok := d.src.(statInput); ok {
+		fi, err := in.Stat()
+		if err != nil {
+			return fmt.Errorf("%w: stat input: %w", ErrMalformedIdxFile, err)
+		}
+		idxSize = fi.Size()
+	}
+
 	if err := validateHeader(d); err != nil {
 		return err
 	}
 
-	flow := []func(*MemoryIndex, io.Reader) error{
+	headerFlow := []func(*MemoryIndex, io.Reader) error{
 		readVersion,
 		readFanout,
+	}
+	for _, f := range headerFlow {
+		if err := f(idx, d); err != nil {
+			return err
+		}
+	}
+
+	if idxSize >= 0 {
+		if err := validateIdxV2Size(idx, idxSize); err != nil {
+			return err
+		}
+	}
+
+	bodyFlow := []func(*MemoryIndex, io.Reader) error{
 		readObjectNames,
 		readCRC32,
 		readOffsets,
 		readPackChecksum,
 	}
-
-	for _, f := range flow {
+	for _, f := range bodyFlow {
 		if err := f(idx, d); err != nil {
 			return err
 		}
@@ -199,3 +253,103 @@ func readIdxChecksum(idx *MemoryIndex, r io.Reader) error {
 
 	return nil
 }
+
+// validateIdxV2Size enforces the size formula used by canonical Git
+// load_idx for idx v2 files: the on-disk length must lie within
+// [minSize, maxSize] where
+//
+//	perObject = hashsz + crc32Len + offset32Len
+//	minSize   = headerLen + fanoutLen + trailerHashes*hashsz + nr*perObject
+//	maxSize   = minSize + (nr-1)*offset64Len     when nr > 0
+//
+// with nr taken from the last fanout entry and hashsz fixed at
+// [objectIDLength] (SHA-1 in v5). Multiplications use a self-checking
+// overflow guard so inputs whose claimed object count overflows the
+// formula are rejected rather than wrapping into a smaller value.
+func validateIdxV2Size(idx *MemoryIndex, idxSize int64) error {
+	nr := int64(idx.Fanout[fanout-1])
+	hashsz := int64(objectIDLength)
+
+	minSize := minIdxV2Size(nr, hashsz)
+	maxSize := maxIdxV2Size(nr, hashsz)
+	if minSize < 0 || maxSize < 0 {
+		return fmt.Errorf("%w: object count %d is inconsistent with file size", ErrMalformedIdxFile, nr)
+	}
+
+	if idxSize < minSize || idxSize > maxSize {
+		return fmt.Errorf("%w: file size %d is inconsistent with object count %d", ErrMalformedIdxFile, idxSize, nr)
+	}
+	return nil
+}
+
+// minIdxV2Size returns the minimum on-disk size of an idx v2 file
+// holding nr objects with the given hash size, mirroring the
+// computation in canonical Git load_idx. Returns -1 when any
+// intermediate multiplication or addition would overflow int64.
+func minIdxV2Size(nr, hashsz int64) int64 {
+	perObject := hashsz + crc32Len + offset32Len
+	fixed := int64(headerLen+fanoutLen) + trailerHashes*hashsz
+
+	objects, ok := mulInt64(nr, perObject)
+	if !ok {
+		return -1
+	}
+	sum, ok := addInt64(fixed, objects)
+	if !ok {
+		return -1
+	}
+	return sum
+}
+
+// maxIdxV2Size returns the maximum on-disk size of an idx v2 file
+// holding nr objects with the given hash size, mirroring the
+// computation in canonical Git load_idx. Returns -1 on overflow.
+func maxIdxV2Size(nr, hashsz int64) int64 {
+	minSize := minIdxV2Size(nr, hashsz)
+	if minSize < 0 {
+		return -1
+	}
+	if nr == 0 {
+		return minSize
+	}
+	overflow, ok := mulInt64(nr-1, offset64Len)
+	if !ok {
+		return -1
+	}
+	sum, ok := addInt64(minSize, overflow)
+	if !ok {
+		return -1
+	}
+	return sum
+}
+
+// mulInt64 returns a*b and whether the result fits in an int64 without
+// overflow. Negative operands or overflow yield ok=false. The overflow
+// check uses the standard self-inverse identity: a*b/b == a only when
+// the multiplication did not wrap.
+func mulInt64(a, b int64) (int64, bool) {
+	if a < 0 || b < 0 {
+		return 0, false
+	}
+	if a == 0 || b == 0 {
+		return 0, true
+	}
+	c := a * b
+	if c/b != a {
+		return 0, false
+	}
+	return c, true
+}
+
+// addInt64 returns a+b and whether the result fits in an int64 without
+// overflow. Negative operands or overflow yield ok=false.
+func addInt64(a, b int64) (int64, bool) {
+	if a < 0 || b < 0 {
+		return 0, false
+	}
+	c := a + b
+	if c < a {
+		return 0, false
+	}
+	return c, true
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go

@@ -2,6 +2,7 @@ package idxfile
 
 import (
 	"bytes"
+	"fmt"
 	"io"
 	"sort"
 	"sync"
@@ -126,7 +127,10 @@ func (idx *MemoryIndex) FindOffset(h plumbing.Hash) (int64, error) {
 		return 0, plumbing.ErrObjectNotFound
 	}
 
-	offset := idx.getOffset(k, i)
+	offset, err := idx.getOffset(k, i)
+	if err != nil {
+		return 0, err
+	}
 
 	// Save the offset for reverse lookup
 	idx.mu.Lock()
@@ -141,17 +145,19 @@ func (idx *MemoryIndex) FindOffset(h plumbing.Hash) (int64, error) {
 
 const isO64Mask = uint64(1) << 31
 
-func (idx *MemoryIndex) getOffset(firstLevel, secondLevel int) uint64 {
+func (idx *MemoryIndex) getOffset(firstLevel, secondLevel int) (uint64, error) {
 	offset := secondLevel << 2
 	ofs := encbin.BigEndian.Uint32(idx.Offset32[firstLevel][offset : offset+4])
 
 	if (uint64(ofs) & isO64Mask) != 0 {
 		offset := 8 * (uint64(ofs) & ^isO64Mask)
-		n := encbin.BigEndian.Uint64(idx.Offset64[offset : offset+8])
-		return n
+		if l := uint64(len(idx.Offset64)); l < 8 || offset > l-8 {
+			return 0, fmt.Errorf("%w: offset64 index out of range", ErrMalformedIdxFile)
+		}
+		return encbin.BigEndian.Uint64(idx.Offset64[offset : offset+8]), nil
 	}
 
-	return uint64(ofs)
+	return uint64(ofs), nil
 }
 
 // FindCRC32 implements the Index interface.
@@ -209,8 +215,11 @@ func (idx *MemoryIndex) genOffsetHash() error {
 		mappedFirstLevel := idx.FanoutMapping[firstLevel]
 		for secondLevel := uint32(0); i < fanoutValue; i++ {
 			copy(hash[:], idx.Names[mappedFirstLevel][secondLevel*objectIDLength:])
-			offset := int64(idx.getOffset(mappedFirstLevel, int(secondLevel)))
-			offsetHash[offset] = hash
+			off, err := idx.getOffset(mappedFirstLevel, int(secondLevel))
+			if err != nil {
+				return err
+			}
+			offsetHash[int64(off)] = hash
 			secondLevel++
 		}
 	}
@@ -291,7 +300,11 @@ func (i *idxfileEntryIter) Next() (*Entry, error) {
 		mappedFirstLevel := i.idx.FanoutMapping[i.firstLevel]
 		entry := new(Entry)
 		copy(entry.Hash[:], i.idx.Names[mappedFirstLevel][i.secondLevel*objectIDLength:])
-		entry.Offset = i.idx.getOffset(mappedFirstLevel, i.secondLevel)
+		var err error
+		entry.Offset, err = i.idx.getOffset(mappedFirstLevel, i.secondLevel)
+		if err != nil {
+			return nil, err
+		}
 		entry.CRC32 = i.idx.getCRC32(mappedFirstLevel, i.secondLevel)
 
 		i.secondLevel++

vendor/github.com/go-git/go-git/v5/plumbing/format/objfile/reader.go

@@ -11,9 +11,10 @@ import (
 )
 
 var (
-	ErrClosed       = errors.New("objfile: already closed")
-	ErrHeader       = errors.New("objfile: invalid header")
-	ErrNegativeSize = errors.New("objfile: negative object size")
+	ErrClosed        = errors.New("objfile: already closed")
+	ErrHeader        = errors.New("objfile: invalid header")
+	ErrHeaderNotRead = errors.New("objfile: Header must be called before Read")
+	ErrNegativeSize  = errors.New("objfile: negative object size")
 )
 
 // Reader reads and decodes compressed objfile data from a provided io.Reader.
@@ -100,12 +101,23 @@ func (r *Reader) prepareForRead(t plumbing.ObjectType, size int64) {
 //
 // If Read encounters the end of the data stream it will return err == io.EOF,
 // either in the current call if n > 0 or in a subsequent call.
+//
+// Read returns ErrHeaderNotRead if Header has not been called successfully.
 func (r *Reader) Read(p []byte) (n int, err error) {
+	if r.multi == nil {
+		return 0, ErrHeaderNotRead
+	}
 	return r.multi.Read(p)
 }
 
 // Hash returns the hash of the object data stream that has been read so far.
+// It returns the zero plumbing.Hash if Header has not been called
+// successfully — guarding against the nil hasher that prepareForRead has
+// not yet allocated.
 func (r *Reader) Hash() plumbing.Hash {
+	if r.multi == nil {
+		return plumbing.ZeroHash
+	}
 	return r.hasher.Sum()
 }
 

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/diff_delta.go

@@ -19,9 +19,6 @@ const (
 	// https://github.com/git/git/blob/f7466e94375b3be27f229c78873f0acf8301c0a5/diff-delta.c#L428
 	// Max size of a copy operation (64KB).
 	maxCopySize = 64 * 1024
-
-	// Min size of a copy operation.
-	minCopySize = 4
 )
 
 // GetDelta returns an EncodedObject of type OFSDeltaObject. Base and Target object,

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/fsobject.go

@@ -78,7 +78,13 @@ func (o *FSObject) Reader() (io.ReadCloser, error) {
 			_ = f.Close()
 			return nil, err
 		}
-		return ioutil.NewReadCloserWithCloser(r, f.Close), nil
+		// Cap the lazy stream at the resolved object size: well-formed
+		// content reaches EOF inside the bound, an inflated stream that
+		// runs past surfaces ErrInflatedSizeMismatch on the byte just
+		// past the limit. For delta-resolved objects o.size is the
+		// expanded size, which is what the caller is reading here.
+		bounded := newBoundedReadCloser(r, o.size)
+		return ioutil.NewReadCloserWithCloser(bounded, f.Close), nil
 	}
 	r, err := p.getObjectContent(o.offset)
 	if err != nil {

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/packfile.go

@@ -126,11 +126,17 @@ func (p *Packfile) nextObjectHeader() (*ObjectHeader, error) {
 	return h, err
 }
 
-func (p *Packfile) getDeltaObjectSize(buf *bytes.Buffer) int64 {
+func (p *Packfile) getDeltaObjectSize(buf *bytes.Buffer) (int64, error) {
 	delta := buf.Bytes()
-	_, delta = decodeLEB128(delta) // skip src size
-	sz, _ := decodeLEB128(delta)
-	return int64(sz)
+	_, delta, err := decodeLEB128(delta) // skip src size
+	if err != nil {
+		return 0, err
+	}
+	sz, _, err := decodeLEB128(delta)
+	if err != nil {
+		return 0, err
+	}
+	return int64(sz), nil
 }
 
 func (p *Packfile) getObjectSize(h *ObjectHeader) (int64, error) {
@@ -145,7 +151,7 @@ func (p *Packfile) getObjectSize(h *ObjectHeader) (int64, error) {
 			return 0, err
 		}
 
-		return p.getDeltaObjectSize(buf), nil
+		return p.getDeltaObjectSize(buf)
 	default:
 		return 0, ErrInvalidObject.AddDetails("type %q", h.Type)
 	}
@@ -233,7 +239,10 @@ func (p *Packfile) getNextObject(h *ObjectHeader, hash plumbing.Hash) (plumbing.
 			return nil, err
 		}
 
-		size = p.getDeltaObjectSize(buf)
+		size, err = p.getDeltaObjectSize(buf)
+		if err != nil {
+			return nil, err
+		}
 		if size <= smallObjectThreshold {
 			var obj = new(plumbing.MemoryObject)
 			obj.SetSize(size)

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/parser.go

@@ -26,6 +26,45 @@ var (
 	ErrDeltaNotCached = errors.New("delta could not be found in cache")
 )
 
+// maxObjectPreallocBytes caps the up-front size hint passed to
+// bytes.Buffer.Grow when staging an object's contents, so a malformed length
+// cannot trigger a huge or out-of-range allocation. The buffer still grows
+// dynamically as data is written; this is purely a hint cap.
+const maxObjectPreallocBytes = 1 << 30 // 1 GiB
+
+// maxObjectsPrealloc caps the up-front capacity reserved from the pack's
+// declared object count, so a header advertising an absurd quantity cannot
+// trigger a multi-gigabyte allocation. The slice and maps still grow
+// organically beyond this hint.
+const maxObjectsPrealloc = 1 << 16 // 64 Ki entries
+
+// Match upstream Git's pack depth ceiling: pack-objects.h OE_DEPTH_BITS,
+// enforced in builtin/pack-objects.c as (1 << OE_DEPTH_BITS) - 1.
+const maxDeltaChainDepth = 4095
+
+// growHint returns a non-negative int64 size, clamped to a sane upper bound,
+// suitable for passing to bytes.Buffer.Grow.
+func growHint(n int64) int {
+	switch {
+	case n <= 0:
+		return 0
+	case n > maxObjectPreallocBytes:
+		return maxObjectPreallocBytes
+	default:
+		return int(n)
+	}
+}
+
+// objectsHint returns a non-negative count, clamped to maxObjectsPrealloc,
+// suitable for passing to make() as the capacity hint for slices or maps
+// sized from a pack's declared object count.
+func objectsHint(n uint32) int {
+	if n > maxObjectsPrealloc {
+		return maxObjectsPrealloc
+	}
+	return int(n)
+}
+
 // Observer interface is implemented by index encoders.
 type Observer interface {
 	// OnHeader is called when a new packfile is opened.
@@ -166,9 +205,10 @@ func (p *Parser) init() error {
 	}
 
 	p.count = c
-	p.oiByHash = make(map[plumbing.Hash]*objectInfo, p.count)
-	p.oiByOffset = make(map[int64]*objectInfo, p.count)
-	p.oi = make([]*objectInfo, p.count)
+	hint := objectsHint(p.count)
+	p.oiByHash = make(map[plumbing.Hash]*objectInfo, hint)
+	p.oiByOffset = make(map[int64]*objectInfo, hint)
+	p.oi = make([]*objectInfo, 0, hint)
 
 	return nil
 }
@@ -261,7 +301,7 @@ func (p *Parser) indexObjects() error {
 		}
 		if delta && !p.scanner.IsSeekable {
 			buf.Reset()
-			buf.Grow(int(oh.Length))
+			buf.Grow(growHint(oh.Length))
 			writers = append(writers, buf)
 		}
 
@@ -306,7 +346,7 @@ func (p *Parser) indexObjects() error {
 		}
 
 		p.oiByOffset[oh.Offset] = ota
-		p.oi[i] = ota
+		p.oi = append(p.oi, ota)
 	}
 
 	return nil
@@ -317,8 +357,12 @@ func (p *Parser) resolveDeltas() error {
 	defer sync.PutBytesBuffer(buf)
 
 	for _, obj := range p.oi {
+		if err := checkDeltaChainDepth(obj); err != nil {
+			return err
+		}
+
 		buf.Reset()
-		buf.Grow(int(obj.Length))
+		buf.Grow(growHint(obj.Length))
 		err := p.get(obj, buf)
 		if err != nil {
 			return err
@@ -337,6 +381,9 @@ func (p *Parser) resolveDeltas() error {
 			// create it once and reuse across all children.
 			r := bytes.NewReader(buf.Bytes())
 			for _, child := range obj.Children {
+				if err := checkDeltaChainDepth(child); err != nil {
+					return err
+				}
 				// Even though we are discarding the output, we still need to read it to
 				// so that the scanner can advance to the next object, and the SHA1 can be
 				// calculated.
@@ -356,6 +403,17 @@ func (p *Parser) resolveDeltas() error {
 	return nil
 }
 
+func checkDeltaChainDepth(o *objectInfo) error {
+	var depth int
+	for current := o; current != nil && current.DiskType.IsDelta(); current = current.Parent {
+		depth++
+		if depth > maxDeltaChainDepth {
+			return fmt.Errorf("%w: delta chain depth exceeds %d", ErrMalformedPackFile, maxDeltaChainDepth)
+		}
+	}
+	return nil
+}
+
 func (p *Parser) resolveExternalRef(o *objectInfo) {
 	if ref, ok := p.oiByHash[o.SHA1]; ok && ref.ExternalRef {
 		p.oiByHash[o.SHA1] = o
@@ -405,7 +463,7 @@ func (p *Parser) get(o *objectInfo, buf *bytes.Buffer) (err error) {
 	if o.DiskType.IsDelta() {
 		b := sync.GetBytesBuffer()
 		defer sync.PutBytesBuffer(b)
-		buf.Grow(int(o.Length))
+		buf.Grow(growHint(o.Length))
 		err := p.get(o.Parent, b)
 		if err != nil {
 			return err

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/patch_delta.go

@@ -31,10 +31,15 @@ const (
 	// premptively made available for a patch operation.
 	maxPatchPreemptionSize uint = 65536
 
-	// minDeltaSize defines the smallest size for a delta.
-	minDeltaSize = 4
+	// minDeltaSize is the smallest valid delta: a 1-byte srcSz LEB128
+	// header followed by a 1-byte targetSz LEB128 header (the
+	// shortest case being targetSz=0 with no operations).
+	minDeltaSize = 2
 )
 
+// uintBits is the bit width of uint on the current platform (32 or 64).
+const uintBits = 32 << (^uint(0) >> 63)
+
 type offset struct {
 	mask  byte
 	shift uint
@@ -142,7 +147,7 @@ func ReaderFromDelta(base plumbing.EncodedObject, deltaRC io.Reader) (io.ReadClo
 		baseBuf := bufio.NewReader(baseRd)
 		basePos := uint(0)
 
-		for {
+		for remainingTargetSz > 0 {
 			cmd, err := deltaBuf.ReadByte()
 			if err == io.EOF {
 				_ = dstWr.CloseWithError(ErrInvalidDelta)
@@ -166,9 +171,9 @@ func ReaderFromDelta(base plumbing.EncodedObject, deltaRC io.Reader) (io.ReadClo
 					return
 				}
 
-				if invalidSize(sz, targetSz) ||
+				if invalidSize(sz, remainingTargetSz) ||
 					invalidOffsetSize(offset, sz, srcSz) {
-					_ = dstWr.Close()
+					_ = dstWr.CloseWithError(ErrInvalidDelta)
 					return
 				}
 
@@ -210,7 +215,7 @@ func ReaderFromDelta(base plumbing.EncodedObject, deltaRC io.Reader) (io.ReadClo
 
 			case isCopyFromDelta(cmd):
 				sz := uint(cmd) // cmd is the size itself
-				if invalidSize(sz, targetSz) {
+				if invalidSize(sz, remainingTargetSz) {
 					_ = dstWr.CloseWithError(ErrInvalidDelta)
 					return
 				}
@@ -225,40 +230,48 @@ func ReaderFromDelta(base plumbing.EncodedObject, deltaRC io.Reader) (io.ReadClo
 				_ = dstWr.CloseWithError(ErrDeltaCmd)
 				return
 			}
-
-			if remainingTargetSz <= 0 {
-				_ = dstWr.Close()
-				return
-			}
 		}
+
+		// Mirror upstream's `data != top` post-loop check: every byte
+		// of the delta payload must be consumed.
+		if _, err := deltaBuf.ReadByte(); err == nil {
+			_ = dstWr.CloseWithError(ErrInvalidDelta)
+			return
+		} else if err != io.EOF {
+			_ = dstWr.CloseWithError(err)
+			return
+		}
+
+		_ = dstWr.Close()
 	}()
 
 	return dstRd, nil
 }
 
 func patchDelta(dst *bytes.Buffer, src, delta []byte) error {
-	if len(delta) < minCopySize {
-		return ErrInvalidDelta
+	srcSz, delta, err := decodeLEB128(delta)
+	if err != nil {
+		return fmt.Errorf("%w: %w", ErrInvalidDelta, err)
 	}
-
-	srcSz, delta := decodeLEB128(delta)
 	if srcSz != uint(len(src)) {
 		return ErrInvalidDelta
 	}
 
-	targetSz, delta := decodeLEB128(delta)
+	targetSz, delta, err := decodeLEB128(delta)
+	if err != nil {
+		return fmt.Errorf("%w: %w", ErrInvalidDelta, err)
+	}
 	remainingTargetSz := targetSz
 
-	var cmd byte
-
 	growSz := min(targetSz, maxPatchPreemptionSize)
 	dst.Grow(int(growSz))
-	for {
+
+	for remainingTargetSz > 0 {
 		if len(delta) == 0 {
 			return ErrInvalidDelta
 		}
 
-		cmd = delta[0]
+		cmd := delta[0]
 		delta = delta[1:]
 
 		switch {
@@ -275,16 +288,16 @@ func patchDelta(dst *bytes.Buffer, src, delta []byte) error {
 				return err
 			}
 
-			if invalidSize(sz, targetSz) ||
+			if invalidSize(sz, remainingTargetSz) ||
 				invalidOffsetSize(offset, sz, srcSz) {
-				break
+				return ErrInvalidDelta
 			}
 			dst.Write(src[offset : offset+sz])
 			remainingTargetSz -= sz
 
 		case isCopyFromDelta(cmd):
 			sz := uint(cmd) // cmd is the size itself
-			if invalidSize(sz, targetSz) {
+			if invalidSize(sz, remainingTargetSz) {
 				return ErrInvalidDelta
 			}
 
@@ -299,10 +312,12 @@ func patchDelta(dst *bytes.Buffer, src, delta []byte) error {
 		default:
 			return ErrDeltaCmd
 		}
+	}
 
-		if remainingTargetSz <= 0 {
-			break
-		}
+	// Mirror upstream's `data != top` post-loop check: every byte of
+	// the delta payload must be consumed.
+	if len(delta) != 0 {
+		return ErrInvalidDelta
 	}
 
 	return nil
@@ -354,7 +369,7 @@ func patchDeltaWriter(dst io.Writer, base io.ReaderAt, delta io.Reader,
 	baselr := io.LimitReader(sr, 0).(*io.LimitedReader)
 	deltalr := io.LimitReader(deltaBuf, 0).(*io.LimitedReader)
 
-	for {
+	for remainingTargetSz > 0 {
 		buf := *bufp
 		cmd, err := deltaBuf.ReadByte()
 		if err == io.EOF {
@@ -374,9 +389,9 @@ func patchDeltaWriter(dst io.Writer, base io.ReaderAt, delta io.Reader,
 				return 0, plumbing.ZeroHash, err
 			}
 
-			if invalidSize(sz, targetSz) ||
+			if invalidSize(sz, remainingTargetSz) ||
 				invalidOffsetSize(offset, sz, srcSz) {
-				return 0, plumbing.ZeroHash, err
+				return 0, plumbing.ZeroHash, ErrInvalidDelta
 			}
 
 			if _, err := sr.Seek(int64(offset), io.SeekStart); err != nil {
@@ -389,7 +404,7 @@ func patchDeltaWriter(dst io.Writer, base io.ReaderAt, delta io.Reader,
 			remainingTargetSz -= sz
 		} else if isCopyFromDelta(cmd) {
 			sz := uint(cmd) // cmd is the size itself
-			if invalidSize(sz, targetSz) {
+			if invalidSize(sz, remainingTargetSz) {
 				return 0, plumbing.ZeroHash, ErrInvalidDelta
 			}
 			deltalr.N = int64(sz)
@@ -399,30 +414,41 @@ func patchDeltaWriter(dst io.Writer, base io.ReaderAt, delta io.Reader,
 
 			remainingTargetSz -= sz
 		} else {
-			return 0, plumbing.ZeroHash, err
-		}
-		if remainingTargetSz <= 0 {
-			break
+			return 0, plumbing.ZeroHash, ErrDeltaCmd
 		}
 	}
 
+	// Mirror upstream's `data != top` post-loop check: every byte of
+	// the delta payload must be consumed.
+	if _, err := deltaBuf.ReadByte(); err == nil {
+		return 0, plumbing.ZeroHash, ErrInvalidDelta
+	} else if err != io.EOF {
+		return 0, plumbing.ZeroHash, err
+	}
+
 	return targetSz, hasher.Sum(), nil
 }
 
 // Decodes a number encoded as an unsigned LEB128 at the start of some
-// binary data and returns the decoded number and the rest of the
-// stream.
+// binary data and returns the decoded number, the rest of the stream,
+// and an error if the encoded value does not fit in a uint.
 //
 // This must be called twice on the delta data buffer, first to get the
 // expected source buffer size, and again to get the target buffer size.
-func decodeLEB128(input []byte) (uint, []byte) {
+func decodeLEB128(input []byte) (uint, []byte, error) {
 	if len(input) == 0 {
-		return 0, input
+		return 0, input, nil
 	}
 
 	var num, sz uint
 	var b byte
 	for {
+		// A continuation byte at shift > uintBits-7 cannot contribute
+		// without overflowing the accumulator.
+		if sz*7 > uintBits-7 {
+			return 0, input, ErrLengthOverflow
+		}
+
 		b = input[sz]
 		num |= (uint(b) & payload) << (sz * 7) // concats 7 bits chunks
 		sz++
@@ -432,12 +458,16 @@ func decodeLEB128(input []byte) (uint, []byte) {
 		}
 	}
 
-	return num, input[sz:]
+	return num, input[sz:], nil
 }
 
 func decodeLEB128ByteReader(input io.ByteReader) (uint, error) {
 	var num, sz uint
 	for {
+		if sz*7 > uintBits-7 {
+			return 0, ErrLengthOverflow
+		}
+
 		b, err := input.ReadByte()
 		if err != nil {
 			return 0, err
@@ -529,8 +559,9 @@ func decodeSize(cmd byte, delta []byte) (uint, []byte, error) {
 	return sz, delta, nil
 }
 
-func invalidSize(sz, targetSz uint) bool {
-	return sz > targetSz
+// invalidSize reports whether sz exceeds the remaining target size.
+func invalidSize(sz, remaining uint) bool {
+	return sz > remaining
 }
 
 func invalidOffsetSize(offset, sz, srcSz uint) bool {

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/scanner.go

@@ -29,8 +29,100 @@ var (
 	ErrSeekNotSupported = NewError("not seek support")
 	// ErrMalformedPackFile is returned by the parser when the pack file is corrupted.
 	ErrMalformedPackFile = errors.New("malformed PACK file")
+	// ErrLengthOverflow is returned when a variable-length integer would not
+	// fit into its accumulator because the input declares more continuation
+	// bytes than the type can hold.
+	ErrLengthOverflow = errors.New("variable-length integer overflow")
+	// ErrInflatedSizeMismatch is returned when a packfile object inflates to
+	// more bytes than the size declared in its object header. A well-formed
+	// packfile never produces more data than the declared size; exceeding it
+	// indicates a structurally invalid entry.
+	ErrInflatedSizeMismatch = errors.New("packfile: inflated object exceeds declared size")
 )
 
+// boundedWriter passes writes through to w up to limit bytes total, then
+// returns ErrInflatedSizeMismatch. It is used to enforce that a packfile
+// object's inflated length does not exceed the size declared in its header.
+type boundedWriter struct {
+	w     io.Writer
+	limit int64
+	n     int64
+}
+
+// Write forwards p to the underlying writer while keeping the running total
+// at or below limit. On overrun it forwards the legal prefix and reports
+// the number of bytes actually consumed alongside ErrInflatedSizeMismatch,
+// matching the contract in io.Writer. A write error from the underlying
+// writer during overrun-handling is joined with ErrInflatedSizeMismatch so
+// it is not silently dropped.
+func (b *boundedWriter) Write(p []byte) (int, error) {
+	if b.n+int64(len(p)) > b.limit {
+		remain := int(b.limit - b.n)
+		err := error(ErrInflatedSizeMismatch)
+		if remain > 0 {
+			n, werr := b.w.Write(p[:remain])
+			b.n += int64(n)
+			if werr != nil {
+				err = errors.Join(ErrInflatedSizeMismatch, werr)
+			}
+			return n, err
+		}
+		return 0, err
+	}
+	n, err := b.w.Write(p)
+	b.n += int64(n)
+	return n, err
+}
+
+// boundedReadCloser wraps a ReadCloser and reports ErrInflatedSizeMismatch
+// once more than limit bytes have been read. It is used by the on-demand
+// object reader returned from FSObject.Reader so that a lazy Read of a
+// packfile object cannot stream past its declared inflated size.
+//
+// The implementation builds on io.LimitedReader with the standard
+// overrun-detection trick: request limit+1 bytes from the underlying so
+// that the moment the sentinel byte materializes (LimitedReader.N drops
+// to zero) we know the source produced more than limit bytes.
+type boundedReadCloser struct {
+	lr      io.LimitedReader
+	closer  io.Closer
+	overrun bool
+}
+
+// newBoundedReadCloser wraps rc so that the cumulative bytes returned from
+// Read never exceed limit. The first call that would have returned a byte
+// past limit instead returns ErrInflatedSizeMismatch; subsequent calls
+// keep returning the same error. A negative limit is treated as zero, so
+// the first byte produced by rc surfaces ErrInflatedSizeMismatch.
+func newBoundedReadCloser(rc io.ReadCloser, limit int64) *boundedReadCloser {
+	if limit < 0 {
+		limit = 0
+	}
+	return &boundedReadCloser{
+		lr:     io.LimitedReader{R: rc, N: limit + 1},
+		closer: rc,
+	}
+}
+
+// Read forwards Read up to the configured byte limit. When the underlying
+// stream produces the limit+1 sentinel byte, the legal prefix is returned
+// alongside ErrInflatedSizeMismatch; on subsequent calls only the error
+// is returned.
+func (b *boundedReadCloser) Read(p []byte) (int, error) {
+	if b.overrun {
+		return 0, ErrInflatedSizeMismatch
+	}
+	n, err := b.lr.Read(p)
+	if b.lr.N == 0 {
+		b.overrun = true
+		return n - 1, ErrInflatedSizeMismatch
+	}
+	return n, err
+}
+
+// Close closes the underlying ReadCloser.
+func (b *boundedReadCloser) Close() error { return b.closer.Close() }
+
 // ObjectHeader contains the information related to the object, this information
 // is collected from the previous bytes to the content of the object.
 type ObjectHeader struct {
@@ -220,6 +312,13 @@ func (s *Scanner) nextObjectHeader() (*ObjectHeader, error) {
 			return nil, err
 		}
 
+		// An OFS-delta references a base object that appears earlier
+		// in the pack; the negative offset must be strictly positive
+		// and not larger than the current object's offset.
+		if no <= 0 || no > h.Offset {
+			return nil, fmt.Errorf("%w: invalid OFS delta offset", ErrMalformedPackFile)
+		}
+
 		h.OffsetReference = h.Offset - no
 	case plumbing.REFDeltaObject:
 		var err error
@@ -303,6 +402,13 @@ func (s *Scanner) readLength(first byte) (int64, error) {
 	shift := firstLengthBits
 	var err error
 	for c&maskContinue > 0 {
+		// Mirrors unpack_object_header_buffer in canonical Git's
+		// packfile.c: a continuation byte at shift > 64-7 cannot
+		// contribute without overflowing an int64.
+		if shift > 64-lengthBits {
+			return 0, fmt.Errorf("%w: %w", ErrMalformedPackFile, ErrLengthOverflow)
+		}
+
 		if c, err = s.r.ReadByte(); err != nil {
 			return 0, err
 		}
@@ -315,10 +421,18 @@ func (s *Scanner) readLength(first byte) (int64, error) {
 }
 
 // NextObject writes the content of the next object into the reader, returns
-// the number of bytes written, the CRC32 of the content and an error, if any
+// the number of bytes written, the CRC32 of the content and an error, if any.
+//
+// When a prior NextObjectHeader has stashed the object header in
+// pendingObject, the inflated stream is bounded by the header's declared
+// length and surfaces ErrInflatedSizeMismatch on overrun.
 func (s *Scanner) NextObject(w io.Writer) (written int64, crc32 uint32, err error) {
+	declaredSize := int64(-1)
+	if s.pendingObject != nil {
+		declaredSize = s.pendingObject.Length
+	}
 	s.pendingObject = nil
-	written, err = s.copyObject(w)
+	written, err = s.copyObject(w, declaredSize)
 
 	s.r.Flush()
 	crc32 = s.crc.Sum32()
@@ -327,23 +441,39 @@ func (s *Scanner) NextObject(w io.Writer) (written int64, crc32 uint32, err erro
 	return
 }
 
-// ReadObject returns a reader for the object content and an error
+// ReadObject returns a reader for the object content and an error.
+//
+// When a prior NextObjectHeader has stashed the object header in
+// pendingObject, the returned reader is bounded by the header's declared
+// length so callers cannot stream past the declared inflated size; an
+// overrun surfaces ErrInflatedSizeMismatch on the byte just past the
+// limit.
 func (s *Scanner) ReadObject() (io.ReadCloser, error) {
+	declaredSize := int64(-1)
+	if s.pendingObject != nil {
+		declaredSize = s.pendingObject.Length
+	}
 	s.pendingObject = nil
 	zr, err := sync.GetZlibReader(s.r)
 	if err != nil {
 		return nil, fmt.Errorf("zlib reset error: %s", err)
 	}
 
-	return ioutil.NewReadCloserWithCloser(zr.Reader, func() error {
+	rc := ioutil.NewReadCloserWithCloser(zr.Reader, func() error {
 		sync.PutZlibReader(zr)
 		return nil
-	}), nil
+	})
+	if declaredSize >= 0 {
+		return newBoundedReadCloser(rc, declaredSize), nil
+	}
+	return rc, nil
 }
 
-// ReadRegularObject reads and write a non-deltified object
-// from it zlib stream in an object entry in the packfile.
-func (s *Scanner) copyObject(w io.Writer) (n int64, err error) {
+// copyObject inflates a non-deltified object's zlib stream into w. When
+// declaredSize is non-negative, the write sink is wrapped in a
+// boundedWriter so an overrun surfaces ErrInflatedSizeMismatch instead
+// of being silently appended.
+func (s *Scanner) copyObject(w io.Writer, declaredSize int64) (n int64, err error) {
 	zr, err := sync.GetZlibReader(s.r)
 	defer sync.PutZlibReader(zr)
 
@@ -352,8 +482,14 @@ func (s *Scanner) copyObject(w io.Writer) (n int64, err error) {
 	}
 
 	defer ioutil.CheckClose(zr.Reader, &err)
+
+	sink := w
+	if declaredSize >= 0 {
+		sink = &boundedWriter{w: w, limit: declaredSize}
+	}
+
 	buf := sync.GetByteSlice()
-	n, err = io.CopyBuffer(w, zr.Reader, *buf)
+	n, err = io.CopyBuffer(sink, zr.Reader, *buf)
 	sync.PutByteSlice(buf)
 	return
 }

vendor/github.com/go-git/go-git/v5/plumbing/object/commit.go

@@ -5,7 +5,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io"
+	"slices"
 	"strings"
 
 	"github.com/ProtonMail/go-crypto/openpgp"
@@ -20,6 +20,7 @@ const (
 	beginpgp       string = "-----BEGIN PGP SIGNATURE-----"
 	endpgp         string = "-----END PGP SIGNATURE-----"
 	headerpgp      string = "gpgsig"
+	headerpgp256   string = "gpgsig-sha256"
 	headerencoding string = "encoding"
 
 	// https://github.com/git/git/blob/bcb6cae2966cc407ca1afc77413b3ef11103c175/Documentation/gitformat-signature.txt#L153
@@ -41,6 +42,11 @@ type MessageEncoding string
 // in time, such as a timestamp, the author of the changes since the last
 // commit, a pointer to the previous commit(s), etc.
 // http://shafiulazam.com/gitbook/1_the_git_object_model.html
+//
+// When a Commit is populated by Decode it retains a reference to the source
+// plumbing.EncodedObject so that EncodeWithoutSignature can reproduce the
+// exact bytes the signature was computed over. Refer to EncodeWithoutSignature
+// for more information.
 type Commit struct {
 	// Hash of the commit object.
 	Hash plumbing.Hash
@@ -66,6 +72,9 @@ type Commit struct {
 	ExtraHeaders []ExtraHeader
 
 	s storer.EncodedObjectStorer
+	// src holds the encoded object this Commit was decoded from, used by
+	// EncodeWithoutSignature to recover the canonical signed bytes.
+	src plumbing.EncodedObject
 }
 
 // ExtraHeader holds any non-standard header
@@ -98,8 +107,8 @@ func (h ExtraHeader) Format(f fmt.State, verb rune) {
 func parseExtraHeader(line []byte) (ExtraHeader, bool) {
 	split := bytes.SplitN(line, []byte{' '}, 2)
 
-	out := ExtraHeader {
-		Key: string(bytes.TrimRight(split[0], "\n")),
+	out := ExtraHeader{
+		Key:   string(bytes.TrimRight(split[0], "\n")),
 		Value: "",
 	}
 
@@ -181,6 +190,11 @@ func (c *Commit) NumParents() int {
 
 var ErrParentNotFound = errors.New("commit parent not found")
 
+// ErrMalformedCommit is returned when a commit object cannot be decoded
+// because its standard headers (tree, parent, author, committer) are missing,
+// duplicated, or out of order.
+var ErrMalformedCommit = errors.New("malformed commit")
+
 // Parent returns the ith parent of a commit.
 func (c *Commit) Parent(i int) (*Commit, error) {
 	if len(c.ParentHashes) == 0 || i > len(c.ParentHashes)-1 {
@@ -227,14 +241,23 @@ func (c *Commit) Type() plumbing.ObjectType {
 	return plumbing.CommitObject
 }
 
+func (c *Commit) reset() {
+	storer := c.s
+	*c = Commit{
+		Encoding: defaultUtf8CommitMessageEncoding,
+		s:        storer,
+	}
+}
+
 // Decode transforms a plumbing.EncodedObject into a Commit struct.
 func (c *Commit) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.CommitObject {
 		return ErrUnsupportedObject
 	}
 
+	c.reset()
 	c.Hash = o.Hash()
-	c.Encoding = defaultUtf8CommitMessageEncoding
+	c.src = o
 
 	reader, err := o.Reader()
 	if err != nil {
@@ -245,97 +268,17 @@ func (c *Commit) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
-	var message bool
-	var mergetag bool
-	var pgpsig bool
-	var msgbuf bytes.Buffer
-	var extraheader *ExtraHeader = nil
-	for {
-		line, err := r.ReadBytes('\n')
-		if err != nil && err != io.EOF {
+	s := &commitScanner{r: r, c: c}
+	for state := scanTree; state != nil; {
+		state, err = state(s)
+		if err != nil {
 			return err
 		}
-
-		if mergetag {
-			if len(line) > 0 && line[0] == ' ' {
-				line = bytes.TrimLeft(line, " ")
-				c.MergeTag += string(line)
-				continue
-			} else {
-				mergetag = false
-			}
-		}
-
-		if pgpsig {
-			if len(line) > 0 && line[0] == ' ' {
-				line = bytes.TrimLeft(line, " ")
-				c.PGPSignature += string(line)
-				continue
-			} else {
-				pgpsig = false
-			}
-		}
-
-		if extraheader != nil {
-			if len(line) > 0 && line[0] == ' ' {
-				extraheader.Value += string(line[1:])
-				continue
-			} else {
-				extraheader.Value = strings.TrimRight(extraheader.Value, "\n")
-				c.ExtraHeaders = append(c.ExtraHeaders, *extraheader)
-				extraheader = nil
-			}
-		}
-
-		if !message {
-			original_line := line
-			line = bytes.TrimSpace(line)
-			if len(line) == 0 {
-				message = true
-				continue
-			}
-
-			split := bytes.SplitN(line, []byte{' '}, 2)
-
-			var data []byte
-			if len(split) == 2 {
-				data = split[1]
-			}
-
-			switch string(split[0]) {
-			case "tree":
-				c.TreeHash = plumbing.NewHash(string(data))
-			case "parent":
-				c.ParentHashes = append(c.ParentHashes, plumbing.NewHash(string(data)))
-			case "author":
-				c.Author.Decode(data)
-			case "committer":
-				c.Committer.Decode(data)
-			case headermergetag:
-				c.MergeTag += string(data) + "\n"
-				mergetag = true
-			case headerencoding:
-				c.Encoding = MessageEncoding(data)
-			case headerpgp:
-				c.PGPSignature += string(data) + "\n"
-				pgpsig = true
-			default:
-				h, maybecontinued := parseExtraHeader(original_line)
-				if maybecontinued {
-					extraheader = &h
-				} else {
-					c.ExtraHeaders = append(c.ExtraHeaders, h)
-				}
-			}
-		} else {
-			msgbuf.Write(line)
-		}
-
-		if err == io.EOF {
-			break
-		}
 	}
-	c.Message = msgbuf.String()
+	if !s.sawTree {
+		return fmt.Errorf("%w: missing tree header", ErrMalformedCommit)
+	}
+	c.Message = s.msgbuf.String()
 	return nil
 }
 
@@ -344,11 +287,73 @@ func (c *Commit) Encode(o plumbing.EncodedObject) error {
 	return c.encode(o, true)
 }
 
-// EncodeWithoutSignature export a Commit into a plumbing.EncodedObject without the signature (correspond to the payload of the PGP signature).
+// EncodeWithoutSignature exports a Commit into a plumbing.EncodedObject
+// without any signature headers, producing the payload that PGP/GPG
+// signatures are computed over.
+//
+// Behaviour depends on how the Commit was created:
+//
+//   - For Commits populated by Decode whose exported fields still match the
+//     source object, the payload is streamed from the raw source bytes with
+//     gpgsig and gpgsig-sha256 headers (and their continuation lines)
+//     stripped verbatim. This preserves the exact bytes the signature was
+//     computed over, regardless of any normalization performed by Decode.
+//
+//   - For Commits constructed in memory, or for decoded Commits whose
+//     exported fields have been mutated, the payload is derived from the
+//     current struct fields. Mutation is detected by re-decoding the source
+//     object and comparing exported fields; if any differ, the in-memory
+//     representation prevails.
 func (c *Commit) EncodeWithoutSignature(o plumbing.EncodedObject) error {
+	if c.matchesSource() {
+		return stripObjectSignatures(o, c.src, plumbing.CommitObject)
+	}
 	return c.encode(o, false)
 }
 
+// matchesSource reports whether c.src is set and re-decoding it produces a
+// Commit whose payload-affecting exported fields are identical to those of
+// c. It is the auto-detection used by EncodeWithoutSignature to decide
+// between the raw bytes and the struct-encoded payload.
+//
+// PGPSignature is intentionally excluded from the comparison: neither path
+// emits it, so mutating it must not trigger a switch to struct-encode (which
+// would change the byte layout the caller is trying to verify against).
+func (c *Commit) matchesSource() bool {
+	if c.src == nil {
+		return false
+	}
+	fresh := &Commit{}
+	if err := fresh.Decode(c.src); err != nil {
+		return false
+	}
+	return c.Hash == fresh.Hash &&
+		signatureEqual(c.Author, fresh.Author) &&
+		signatureEqual(c.Committer, fresh.Committer) &&
+		c.MergeTag == fresh.MergeTag &&
+		c.Message == fresh.Message &&
+		c.TreeHash == fresh.TreeHash &&
+		c.Encoding == fresh.Encoding &&
+		slices.Equal(c.ParentHashes, fresh.ParentHashes) &&
+		slices.Equal(c.ExtraHeaders, fresh.ExtraHeaders)
+}
+
+func signatureEqual(a, b Signature) bool {
+	return a.Name == b.Name &&
+		a.Email == b.Email &&
+		a.When.Unix() == b.When.Unix() &&
+		a.When.Format("-0700") == b.When.Format("-0700")
+}
+
+func isStandardHeader(key string) bool {
+	switch key {
+	case "tree", "parent", "author", "committer",
+		headerencoding, headermergetag, headerpgp, headerpgp256:
+		return true
+	}
+	return false
+}
+
 func (c *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.CommitObject)
 	w, err := o.Writer()
@@ -407,7 +412,9 @@ func (c *Commit) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	}
 
 	for _, header := range c.ExtraHeaders {
-		
+		if isStandardHeader(header.Key) {
+			continue
+		}
 		if _, err = fmt.Fprintf(w, "\n%s", header); err != nil {
 			return err
 		}
@@ -478,9 +485,21 @@ func (c *Commit) String() string {
 	)
 }
 
+// ErrMultipleSignatures is returned by Verify when the commit carries more
+// than one armored signature block. Mirrors upstream's parse_gpg_output
+// rejection of GOODSIG/BADSIG status lines after the first
+// (gpg-interface.c:257-269): multi-signature commits are intentionally
+// unsupported because their provenance cannot be reduced to a single
+// authoritative signer.
+var ErrMultipleSignatures = errors.New("commit has multiple signatures")
+
 // Verify performs PGP verification of the commit with a provided armored
 // keyring and returns openpgp.Entity associated with verifying key on success.
 func (c *Commit) Verify(armoredKeyRing string) (*openpgp.Entity, error) {
+	if countSignatureBlocks([]byte(c.PGPSignature)) > 1 {
+		return nil, ErrMultipleSignatures
+	}
+
 	keyRingReader := strings.NewReader(armoredKeyRing)
 	keyring, err := openpgp.ReadArmoredKeyRing(keyRingReader)
 	if err != nil {

vendor/github.com/go-git/go-git/v5/plumbing/object/commit_scanner.go

@@ -0,0 +1,377 @@
+package object
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/go-git/go-git/v5/plumbing"
+)
+
+// commitScanner holds the working state of the commit decoder driven by the
+// stateFn loop in (*Commit).Decode. Each commitState reads one or more lines
+// from r, updates the in-progress *Commit and the scanner's bookkeeping, and
+// returns the state that should run next (or nil to stop).
+type commitScanner struct {
+	r      *bufio.Reader
+	c      *Commit
+	msgbuf bytes.Buffer
+
+	// pending holds a line that was read but the current state decided to
+	// hand back to the next state, paired with the io.EOF flag that was
+	// returned when the line was originally read.
+	pending    []byte
+	pendingErr error
+
+	// First-occurrence tracking: once the corresponding field has been
+	// decoded, subsequent occurrences are silently dropped (matches
+	// upstream's find_commit_header / first-wins semantics).
+	//
+	// gpgsig is not tracked here: upstream's parse_buffer_signed_by_header
+	// (commit.c:1186) accumulates every occurrence into one signature buffer,
+	// so we do the same on the scanner side to keep verification payloads
+	// byte-aligned. gpgsig-sha256 is recognized and skipped without exposing a
+	// new field in v5.
+	sawTree, sawAuthor, sawCommitter bool
+	sawEncoding, sawMergetag         bool
+
+	// extra is the multi-line ExtraHeader currently being assembled.
+	extra *ExtraHeader
+}
+
+// commitState is one step of the decoder state machine. Each function reads
+// the lines it needs, mutates *Commit via s.c, and returns the next state to
+// run (or nil to terminate the loop).
+type commitState func(*commitScanner) (commitState, error)
+
+// readLine returns the next line from the buffer, transparently consuming any
+// line that was previously pushed back by a state that decided not to handle
+// it.
+func (s *commitScanner) readLine() ([]byte, error) {
+	if s.pending != nil {
+		line, err := s.pending, s.pendingErr
+		s.pending, s.pendingErr = nil, nil
+		return line, err
+	}
+	line, err := s.r.ReadBytes('\n')
+	if err != nil && err != io.EOF {
+		return line, err
+	}
+	return line, err
+}
+
+// pushBack stashes an unconsumed line so the next state's readLine call sees
+// it. Only one line can be pushed back at a time.
+func (s *commitScanner) pushBack(line []byte, err error) {
+	s.pending = line
+	s.pendingErr = err
+}
+
+// scanTree expects the first non-empty header to be `tree HASH`. Anything
+// else (or an empty buffer) is rejected with ErrMalformedCommit, matching
+// upstream's `bogus commit object` check.
+func scanTree(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing tree header", ErrMalformedCommit)
+	}
+
+	key, data := splitHeader(line)
+	if key != "tree" {
+		return nil, fmt.Errorf("%w: tree header must be first", ErrMalformedCommit)
+	}
+	h, herr := parseObjectIDHex(data, ErrMalformedCommit, "tree")
+	if herr != nil {
+		return nil, herr
+	}
+	s.c.TreeHash = h
+	s.sawTree = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanParents, nil
+}
+
+// scanParents consumes contiguous `parent HASH` lines. The first non-parent
+// line ends the parent block and is handed off to scanAuthor; any later
+// `parent` line is silently dropped (matches upstream's parse_commit_buffer
+// exiting its parent loop at the first non-parent line and
+// read_commit_extra_header_lines filtering `parent` out of extras).
+func scanParents(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "parent" {
+		h, herr := parseObjectIDHex(data, ErrMalformedCommit, "parent")
+		if herr != nil {
+			return nil, herr
+		}
+		s.c.ParentHashes = append(s.c.ParentHashes, h)
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanParents, nil
+	}
+	s.pushBack(line, err)
+	return scanAuthor, nil
+}
+
+// scanAuthor accepts an `author` line at its canonical position immediately
+// after the parent block. Any other header here is pushed back for
+// scanCommitter; an out-of-place author is therefore silently dropped.
+// Mirrors upstream's parse_commit_date func.
+func scanAuthor(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "author" {
+		s.c.Author.Decode(data)
+		s.sawAuthor = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanCommitter, nil
+	}
+	s.pushBack(line, err)
+	return scanCommitter, nil
+}
+
+// scanCommitter accepts a `committer` line at its canonical position
+// immediately after the author. Any other header is pushed back for
+// scanHeaders. Same upstream rationale as scanAuthor.
+func scanCommitter(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "committer" {
+		s.c.Committer.Decode(data)
+		s.sawCommitter = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanHeaders, nil
+	}
+	s.pushBack(line, err)
+	return scanHeaders, nil
+}
+
+// scanHeaders dispatches one header line. Continuation-bearing headers
+// (mergetag, gpgsig, gpgsig-sha256, and unknown extras whose value is
+// continued on subsequent lines) hand off to a dedicated continuation state
+// that handles the `<space>...` lines and then returns here.
+func scanHeaders(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanMessage, nil
+	}
+
+	originalLine := line
+	key, data := splitHeader(line)
+
+	var next commitState = scanHeaders
+	switch key {
+	case "tree", "parent", "author", "committer":
+		// Anything reaching scanHeaders with one of these keys is out of
+		// canonical position: duplicate tree, parent past the contiguous
+		// block, or author/committer not at their expected slot. Drop them
+		// the same way upstream's standard_header_field filter excludes
+		// them from the extras list (read_commit_extra_header_lines,
+		// commit.c:1520-1522).
+	case headerencoding:
+		if !s.sawEncoding {
+			s.c.Encoding = MessageEncoding(data)
+			s.sawEncoding = true
+		}
+	case headermergetag:
+		if s.sawMergetag {
+			next = scanSkipCont
+		} else {
+			s.c.MergeTag += string(data) + "\n"
+			s.sawMergetag = true
+			next = scanMergetagCont
+		}
+	case headerpgp:
+		s.c.PGPSignature += string(data) + "\n"
+		next = scanPgpCont
+	case headerpgp256:
+		next = scanSkipCont
+	default:
+		h, multiline := parseExtraHeader(originalLine)
+		if multiline {
+			s.extra = &h
+			next = scanExtraCont
+		} else {
+			s.c.ExtraHeaders = append(s.c.ExtraHeaders, h)
+		}
+	}
+
+	if err == io.EOF {
+		return nil, nil
+	}
+	return next, nil
+}
+
+// scanMergetagCont accumulates continuation lines for the first mergetag
+// header. Continuations strip exactly one leading space, mirroring upstream's
+// `line + 1` (commit.c:1509). The first non-continuation line is pushed back
+// so scanHeaders can dispatch it.
+func scanMergetagCont(s *commitScanner) (commitState, error) {
+	return continuationCont(s, &s.c.MergeTag, scanMergetagCont)
+}
+
+// scanPgpCont accumulates continuation lines for a signature header.
+// Continuations strip exactly one leading space, mirroring upstream's
+// `line + 1` (commit.c:1509). The first non-continuation line is pushed back
+// so scanHeaders can dispatch it. Repeat occurrences of the same signature
+// header land back here and concatenate, matching upstream's
+// parse_buffer_signed_by_header (commit.c:1186).
+func scanPgpCont(s *commitScanner) (commitState, error) {
+	return continuationCont(s, &s.c.PGPSignature, scanPgpCont)
+}
+
+func continuationCont(s *commitScanner, dst *string, self commitState) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		*dst += string(line[1:])
+		if err == io.EOF {
+			return nil, nil
+		}
+		return self, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+// scanSkipCont discards continuation lines that belong to a header scanHeaders
+// chose to drop.
+func scanSkipCont(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanSkipCont, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+// scanExtraCont accumulates continuation lines for an unknown ExtraHeader
+// whose value spans multiple lines, then finalises the entry once the
+// continuation block ends.
+func scanExtraCont(s *commitScanner) (commitState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		s.extra.Value += string(line[1:])
+		if err == io.EOF {
+			s.finaliseExtra()
+			return nil, nil
+		}
+		return scanExtraCont, nil
+	}
+	s.finaliseExtra()
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanHeaders, nil
+}
+
+func (s *commitScanner) finaliseExtra() {
+	s.extra.Value = strings.TrimRight(s.extra.Value, "\n")
+	s.c.ExtraHeaders = append(s.c.ExtraHeaders, *s.extra)
+	s.extra = nil
+}
+
+// scanMessage drains the remaining bytes into the message buffer.
+func scanMessage(s *commitScanner) (commitState, error) {
+	for {
+		line, err := s.readLine()
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+		if len(line) > 0 {
+			s.msgbuf.Write(line)
+		}
+		if err == io.EOF {
+			return nil, nil
+		}
+	}
+}
+
+// isBlankLine reports whether line is the canonical header/body separator:
+// a single newline. Mirrors upstream's `*line == '\n'` test in
+// read_commit_extra_header_lines (commit.c:1502).
+func isBlankLine(line []byte) bool {
+	return len(line) == 1 && line[0] == '\n'
+}
+
+// splitHeader returns the header keyword (everything before the first space)
+// and the value (everything after, with the trailing newline stripped). If
+// the header has no value the returned data is nil.
+func splitHeader(line []byte) (string, []byte) {
+	trimmed := bytes.TrimRight(line, "\n")
+	key, value, ok := bytes.Cut(trimmed, []byte{' '})
+	if !ok {
+		return string(trimmed), nil
+	}
+	return string(key), value
+}
+
+func parseObjectIDHex(data []byte, malformedErr error, header string) (plumbing.Hash, error) {
+	id := string(data)
+	if !plumbing.IsHash(id) {
+		return plumbing.ZeroHash, fmt.Errorf("%w: bad %s hash", malformedErr, header)
+	}
+	return plumbing.NewHash(id), nil
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/signature.go

@@ -1,6 +1,13 @@
 package object
 
-import "bytes"
+import (
+	"bytes"
+	"io"
+
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/utils/ioutil"
+	"github.com/go-git/go-git/v5/utils/sync"
+)
 
 const (
 	signatureTypeUnknown signatureType = iota
@@ -100,3 +107,116 @@ func parseSignedBytes(b []byte) (int, signatureType) {
 	}
 	return match, t
 }
+
+// countSignatureBlocks reports how many distinct armored signature blocks
+// start at a line boundary in b. Used by verification paths to reject
+// multi-signature payloads, matching upstream's check in gpg-interface.c
+// where parse_gpg_output bails out the first time it sees a second
+// exclusive status line (a second GOODSIG/BADSIG/etc.).
+func countSignatureBlocks(b []byte) int {
+	n, count := 0, 0
+	for n < len(b) {
+		i := b[n:]
+		if typeForSignature(i) != signatureTypeUnknown {
+			count++
+		}
+		if eol := bytes.IndexByte(i, '\n'); eol >= 0 {
+			n += eol + 1
+			continue
+		}
+		break
+	}
+	return count
+}
+
+// isSignatureHeader reports whether line is a canonical "gpgsig "/
+// "gpgsig-sha256 " header line. Other "gpgsig"-prefixed extra headers
+// are intentionally not matched.
+func isSignatureHeader(line []byte) bool {
+	return bytes.HasPrefix(line, []byte(headerpgp+" ")) ||
+		bytes.HasPrefix(line, []byte(headerpgp256+" "))
+}
+
+// stripObjectSignatures streams src into dst, producing the byte sequence
+// over which a PGP/GPG signature is computed:
+//
+//   - Canonical "gpgsig" and "gpgsig-sha256" headers (and their
+//     continuation lines) are dropped, mirroring upstream's
+//     remove_signature in commit.c.
+//   - For tag objects, the inline trailing PGP signature is additionally
+//     truncated, mirroring upstream's parse_signature in gpg-interface.c
+//     used by gpg_verify_tag.
+//
+// The returned object's type is set to objType. Used by both
+// Commit.EncodeWithoutSignature and Tag.EncodeWithoutSignature to
+// reproduce the exact bytes the signature was computed over.
+func stripObjectSignatures(dst, src plumbing.EncodedObject, objType plumbing.ObjectType) (err error) {
+	dst.SetType(objType)
+
+	r, err := src.Reader()
+	if err != nil {
+		return err
+	}
+	defer ioutil.CheckClose(r, &err)
+
+	var input io.Reader = r
+	if objType == plumbing.TagObject {
+		raw, err := io.ReadAll(r)
+		if err != nil {
+			return err
+		}
+		if sm, _ := parseSignedBytes(raw); sm >= 0 {
+			raw = raw[:sm]
+		}
+		input = bytes.NewReader(raw)
+	}
+
+	w, err := dst.Writer()
+	if err != nil {
+		return err
+	}
+	defer ioutil.CheckClose(w, &err)
+
+	return stripHeaderSignatures(w, input)
+}
+
+// stripHeaderSignatures copies r to w, dropping canonical signature header
+// lines (gpgsig and gpgsig-sha256) and their continuation lines. Lines
+// past the blank line that closes the header block are copied verbatim.
+func stripHeaderSignatures(w io.Writer, r io.Reader) error {
+	br := sync.GetBufioReader(r)
+	defer sync.PutBufioReader(br)
+
+	var inBody, skipping bool
+	for {
+		line, rerr := br.ReadBytes('\n')
+		if rerr != nil && rerr != io.EOF {
+			return rerr
+		}
+
+		write := true
+		if !inBody {
+			switch {
+			case skipping && len(line) > 0 && line[0] == ' ':
+				write = false
+			case isSignatureHeader(line):
+				skipping = true
+				write = false
+			case len(line) == 1 && line[0] == '\n':
+				skipping = false
+				inBody = true
+			default:
+				skipping = false
+			}
+		}
+
+		if write && len(line) > 0 {
+			if _, werr := w.Write(line); werr != nil {
+				return werr
+			}
+		}
+		if rerr == io.EOF {
+			return nil
+		}
+	}
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/tag.go

@@ -1,9 +1,8 @@
 package object
 
 import (
-	"bytes"
+	"errors"
 	"fmt"
-	"io"
 	"strings"
 
 	"github.com/ProtonMail/go-crypto/openpgp"
@@ -13,6 +12,10 @@ import (
 	"github.com/go-git/go-git/v5/utils/sync"
 )
 
+// ErrMalformedTag is returned when a tag object cannot be decoded because
+// its required headers (object, type, tag) are missing or out of order.
+var ErrMalformedTag = errors.New("malformed tag")
+
 // Tag represents an annotated tag object. It points to a single git object of
 // any type, but tags typically are applied to commit or blob objects. It
 // provides a reference that associates the target with a tag name. It also
@@ -39,6 +42,9 @@ type Tag struct {
 	Target plumbing.Hash
 
 	s storer.EncodedObjectStorer
+	// src holds the encoded object this Tag was decoded from, used by
+	// EncodeWithoutSignature to recover the canonical signed bytes.
+	src plumbing.EncodedObject
 }
 
 // GetTag gets a tag from an object storer and decodes it.
@@ -77,13 +83,20 @@ func (t *Tag) Type() plumbing.ObjectType {
 	return plumbing.TagObject
 }
 
+func (t *Tag) reset() {
+	storer := t.s
+	*t = Tag{s: storer}
+}
+
 // Decode transforms a plumbing.EncodedObject into a Tag struct.
 func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.TagObject {
 		return ErrUnsupportedObject
 	}
 
+	t.reset()
 	t.Hash = o.Hash()
+	t.src = o
 
 	reader, err := o.Reader()
 	if err != nil {
@@ -94,42 +107,15 @@ func (t *Tag) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
-	for {
-		var line []byte
-		line, err = r.ReadBytes('\n')
-		if err != nil && err != io.EOF {
+	scanner := &tagScanner{r: r, t: t}
+	for state := scanTagObject; state != nil; {
+		state, err = state(scanner)
+		if err != nil {
 			return err
 		}
-
-		line = bytes.TrimSpace(line)
-		if len(line) == 0 {
-			break // Start of message
-		}
-
-		split := bytes.SplitN(line, []byte{' '}, 2)
-		switch string(split[0]) {
-		case "object":
-			t.Target = plumbing.NewHash(string(split[1]))
-		case "type":
-			t.TargetType, err = plumbing.ParseObjectType(string(split[1]))
-			if err != nil {
-				return err
-			}
-		case "tag":
-			t.Name = string(split[1])
-		case "tagger":
-			t.Tagger.Decode(split[1])
-		}
-
-		if err == io.EOF {
-			return nil
-		}
 	}
 
-	data, err := io.ReadAll(r)
-	if err != nil {
-		return err
-	}
+	data := scanner.msgbuf.Bytes()
 	if sm, _ := parseSignedBytes(data); sm >= 0 {
 		t.PGPSignature = string(data[sm:])
 		data = data[:sm]
@@ -144,11 +130,54 @@ func (t *Tag) Encode(o plumbing.EncodedObject) error {
 	return t.encode(o, true)
 }
 
-// EncodeWithoutSignature export a Tag into a plumbing.EncodedObject without the signature (correspond to the payload of the PGP signature).
+// EncodeWithoutSignature exports a Tag into a plumbing.EncodedObject without
+// any signature data, producing the payload that PGP/GPG signatures are
+// computed over.
+//
+// Behaviour mirrors Commit.EncodeWithoutSignature:
+//
+//   - For Tags populated by Decode whose exported fields still match the
+//     source object, the payload is streamed from the raw source bytes with
+//     the inline trailing signature truncated and gpgsig/gpgsig-sha256
+//     headers (and their continuation lines) stripped verbatim. This
+//     preserves the exact bytes the signature was computed over, regardless
+//     of any normalization performed by Decode.
+//
+//   - For Tags constructed in memory, or for decoded Tags whose exported
+//     fields have been mutated, the payload is derived from the current
+//     struct fields. Mutation is detected by re-decoding the source object
+//     and comparing exported fields; if any differ, the in-memory
+//     representation prevails.
 func (t *Tag) EncodeWithoutSignature(o plumbing.EncodedObject) error {
+	if t.matchesSource() {
+		return stripObjectSignatures(o, t.src, plumbing.TagObject)
+	}
 	return t.encode(o, false)
 }
 
+// matchesSource reports whether t.src is set and re-decoding it produces a
+// Tag whose payload-affecting exported fields are identical to those of t.
+//
+// PGPSignature is intentionally excluded from the comparison: neither path
+// emits it as part of the verification payload, so mutating it must not
+// trigger a switch to struct-encode (which would change the byte layout the
+// caller is trying to verify against).
+func (t *Tag) matchesSource() bool {
+	if t.src == nil {
+		return false
+	}
+	fresh := &Tag{}
+	if err := fresh.Decode(t.src); err != nil {
+		return false
+	}
+	return t.Hash == fresh.Hash &&
+		t.Name == fresh.Name &&
+		signatureEqual(t.Tagger, fresh.Tagger) &&
+		t.Message == fresh.Message &&
+		t.TargetType == fresh.TargetType &&
+		t.Target == fresh.Target
+}
+
 func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	o.SetType(plumbing.TagObject)
 	w, err := o.Writer()
@@ -158,16 +187,26 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	defer ioutil.CheckClose(w, &err)
 
 	if _, err = fmt.Fprintf(w,
-		"object %s\ntype %s\ntag %s\ntagger ",
+		"object %s\ntype %s\ntag %s\n",
 		t.Target.String(), t.TargetType.Bytes(), t.Name); err != nil {
 		return err
 	}
 
-	if err = t.Tagger.Encode(w); err != nil {
-		return err
+	if !isZeroSignature(t.Tagger) {
+		if _, err = fmt.Fprint(w, "tagger "); err != nil {
+			return err
+		}
+
+		if err = t.Tagger.Encode(w); err != nil {
+			return err
+		}
+
+		if _, err = fmt.Fprint(w, "\n"); err != nil {
+			return err
+		}
 	}
 
-	if _, err = fmt.Fprint(w, "\n\n"); err != nil {
+	if _, err = fmt.Fprint(w, "\n"); err != nil {
 		return err
 	}
 
@@ -175,11 +214,12 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 		return err
 	}
 
-	// Note that this is highly sensitive to what it sent along in the message.
-	// Message *always* needs to end with a newline, or else the message and the
-	// signature will be concatenated into a corrupt object. Since this is a
-	// lower-level method, we assume you know what you are doing and have already
-	// done the needful on the message in the caller.
+	// Note that this is highly sensitive to what is sent along in the
+	// message. Message *always* needs to end with a newline, or else the
+	// message and the trailing signature will be concatenated into a
+	// corrupt object. Since this is a lower-level method, we assume you
+	// know what you are doing and have already done the needful on the
+	// message in the caller.
 	if includeSig {
 		if _, err = fmt.Fprint(w, t.PGPSignature); err != nil {
 			return err
@@ -189,6 +229,10 @@ func (t *Tag) encode(o plumbing.EncodedObject, includeSig bool) (err error) {
 	return err
 }
 
+func isZeroSignature(s Signature) bool {
+	return s.Name == "" && s.Email == "" && s.When.IsZero()
+}
+
 // Commit returns the commit pointed to by the tag. If the tag points to a
 // different type of object ErrUnsupportedObject will be returned.
 func (t *Tag) Commit() (*Commit, error) {
@@ -256,7 +300,8 @@ func (t *Tag) String() string {
 }
 
 // Verify performs PGP verification of the tag with a provided armored
-// keyring and returns openpgp.Entity associated with verifying key on success.
+// keyring and returns openpgp.Entity associated with verifying key on
+// success.
 func (t *Tag) Verify(armoredKeyRing string) (*openpgp.Entity, error) {
 	keyRingReader := strings.NewReader(armoredKeyRing)
 	keyring, err := openpgp.ReadArmoredKeyRing(keyRingReader)

vendor/github.com/go-git/go-git/v5/plumbing/object/tag_scanner.go

@@ -0,0 +1,237 @@
+package object
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+
+	"github.com/go-git/go-git/v5/plumbing"
+)
+
+// tagScanner holds the working state of the tag decoder driven by the
+// stateFn loop in (*Tag).Decode. Each tagState reads one or more lines
+// from r, updates the in-progress *Tag and the scanner's bookkeeping,
+// and returns the state that should run next (or nil to stop).
+type tagScanner struct {
+	r      *bufio.Reader
+	t      *Tag
+	msgbuf bytes.Buffer
+
+	// pending holds a line that was read but the current state decided to
+	// hand back to the next state, paired with the io.EOF flag returned
+	// when the line was originally read.
+	pending    []byte
+	pendingErr error
+
+	// First-occurrence tracking: once the corresponding canonical
+	// header has been decoded at its expected position, subsequent
+	// occurrences (or out-of-position lines) are silently dropped,
+	// matching the strict layout enforced by upstream's
+	// parse_tag_buffer (tag.c:130).
+	//
+	// gpgsig-sha256 is recognized and skipped without exposing a new field
+	// in v5.
+	sawObject, sawType, sawName, sawTagger bool
+}
+
+// tagState is one step of the decoder state machine. Each function reads
+// the lines it needs, mutates *Tag via s.t, and returns the next state
+// to run (or nil to terminate the loop).
+type tagState func(*tagScanner) (tagState, error)
+
+// readLine returns the next line from the buffer, transparently
+// consuming any line that was previously pushed back by a state that
+// decided not to handle it.
+func (s *tagScanner) readLine() ([]byte, error) {
+	if s.pending != nil {
+		line, err := s.pending, s.pendingErr
+		s.pending, s.pendingErr = nil, nil
+		return line, err
+	}
+	return s.r.ReadBytes('\n')
+}
+
+// pushBack stashes an unconsumed line so the next state's readLine call
+// sees it. Only one line can be pushed back at a time.
+func (s *tagScanner) pushBack(line []byte, err error) {
+	s.pending = line
+	s.pendingErr = err
+}
+
+// scanTagObject requires the first line to be `object HASH`, mirroring
+// upstream's strict parse_tag_buffer (tag.c:151-156). Anything else
+// returns ErrMalformedTag.
+func scanTagObject(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing object header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "object" {
+		return nil, fmt.Errorf("%w: object header must be first", ErrMalformedTag)
+	}
+	h, herr := parseObjectIDHex(data, ErrMalformedTag, "object")
+	if herr != nil {
+		return nil, herr
+	}
+	s.t.Target = h
+	s.sawObject = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagType, nil
+}
+
+// scanTagType requires a `type` line immediately after the object header,
+// mirroring upstream's parse_tag_buffer (tag.c:158-166).
+func scanTagType(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing type header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "type" {
+		return nil, fmt.Errorf("%w: type header must follow object", ErrMalformedTag)
+	}
+	ot, perr := plumbing.ParseObjectType(string(data))
+	if perr != nil {
+		return nil, perr
+	}
+	s.t.TargetType = ot
+	s.sawType = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagName, nil
+}
+
+// scanTagName requires a `tag` line immediately after the type header,
+// mirroring upstream's parse_tag_buffer (tag.c:186-194).
+func scanTagName(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 || isBlankLine(line) {
+		return nil, fmt.Errorf("%w: missing tag header", ErrMalformedTag)
+	}
+
+	key, data := splitHeader(line)
+	if key != "tag" {
+		return nil, fmt.Errorf("%w: tag header must follow type", ErrMalformedTag)
+	}
+	s.t.Name = string(data)
+	s.sawName = true
+	if err == io.EOF {
+		return nil, nil
+	}
+	return scanTagTagger, nil
+}
+
+// scanTagTagger accepts a `tagger` line at its canonical position. Any
+// other header is pushed back for scanTagHeaders.
+func scanTagTagger(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanTagMessage, nil
+	}
+
+	key, data := splitHeader(line)
+	if key == "tagger" {
+		s.t.Tagger.Decode(data)
+		s.sawTagger = true
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanTagHeaders, nil
+	}
+	s.pushBack(line, err)
+	return scanTagHeaders, nil
+}
+
+// scanTagHeaders dispatches one header line. gpgsig-sha256 hands off to
+// scanTagSkipCont so the continuation block can be consumed; out-of-position
+// canonical fields and unknown headers are silently dropped.
+func scanTagHeaders(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) == 0 {
+		return nil, nil
+	}
+	if isBlankLine(line) {
+		return scanTagMessage, nil
+	}
+
+	key, _ := splitHeader(line)
+	next := scanTagHeaders
+	switch key {
+	case "object", "type", "tag", "tagger":
+		// Out-of-canonical-position duplicates are dropped, mirroring the
+		// strict ordering of upstream's parse_tag_buffer.
+	case headerpgp256:
+		next = scanTagSkipCont
+	default:
+		// Unknown header: silently dropped (the Tag struct does not
+		// expose ExtraHeaders).
+	}
+
+	if err == io.EOF {
+		return nil, nil
+	}
+	return next, nil
+}
+
+// scanTagSkipCont discards continuation lines for a header scanTagHeaders chose
+// to drop. The first non-continuation line is pushed back so scanTagHeaders can
+// dispatch it.
+func scanTagSkipCont(s *tagScanner) (tagState, error) {
+	line, err := s.readLine()
+	if err != nil && err != io.EOF {
+		return nil, err
+	}
+	if len(line) > 0 && line[0] == ' ' {
+		if err == io.EOF {
+			return nil, nil
+		}
+		return scanTagSkipCont, nil
+	}
+	if len(line) > 0 {
+		s.pushBack(line, err)
+	}
+	return scanTagHeaders, nil
+}
+
+// scanTagMessage drains the remaining bytes into the message buffer.
+// (*Tag).Decode then runs parseSignedBytes over those bytes to peel off
+// the optional inline trailing PGP signature.
+func scanTagMessage(s *tagScanner) (tagState, error) {
+	for {
+		line, err := s.readLine()
+		if err != nil && err != io.EOF {
+			return nil, err
+		}
+		if len(line) > 0 {
+			s.msgbuf.Write(line)
+		}
+		if err == io.EOF {
+			return nil, nil
+		}
+	}
+}

vendor/github.com/go-git/go-git/v5/plumbing/object/tree.go

@@ -10,6 +10,7 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/go-git/go-git/v5/internal/pathutil"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/filemode"
 	"github.com/go-git/go-git/v5/plumbing/storer"
@@ -29,6 +30,7 @@ var (
 	ErrDirectoryNotFound = errors.New("directory not found")
 	ErrEntryNotFound     = errors.New("entry not found")
 	ErrEntriesNotSorted  = errors.New("entries in tree are not sorted")
+	ErrMalformedTree     = errors.New("malformed tree")
 )
 
 // Tree is basically like a directory - it references a bunch of other trees
@@ -37,9 +39,9 @@ type Tree struct {
 	Entries []TreeEntry
 	Hash    plumbing.Hash
 
-	s storer.EncodedObjectStorer
-	m map[string]*TreeEntry
-	t map[string]*Tree // tree path cache
+	s             storer.EncodedObjectStorer
+	t             map[string]*Tree // tree path cache
+	entriesSorted bool
 }
 
 // GetTree gets a tree from an object storer and decodes it.
@@ -117,7 +119,16 @@ func (t *Tree) Tree(path string) (*Tree, error) {
 }
 
 // TreeEntryFile returns the *File for a given *TreeEntry.
+//
+// The entry's name is validated against pathutil.ValidTreePath for
+// the same reason FindEntry validates: TreeEntryFile is a boundary
+// where attacker-controlled tree data leaves the trusted store as a
+// *File whose Name a caller can hand to filesystem ops.
 func (t *Tree) TreeEntryFile(e *TreeEntry) (*File, error) {
+	if err := pathutil.ValidTreePath(e.Name); err != nil {
+		return nil, err
+	}
+
 	blob, err := GetBlob(t.s, e.Hash)
 	if err != nil {
 		return nil, err
@@ -127,7 +138,16 @@ func (t *Tree) TreeEntryFile(e *TreeEntry) (*File, error) {
 }
 
 // FindEntry search a TreeEntry in this tree or any subtree.
+//
+// The lookup path is validated against pathutil.ValidTreePath to
+// prevent attacker-controlled tree contents from leaking past this
+// boundary as `.git`-shaped or path-traversal-shaped names. Callers
+// that legitimately need to look up unsafe paths should walk the
+// tree manually.
 func (t *Tree) FindEntry(path string) (*TreeEntry, error) {
+	if err := pathutil.ValidTreePath(path); err != nil {
+		return nil, err
+	}
 	if t.t == nil {
 		t.t = make(map[string]*Tree)
 	}
@@ -182,16 +202,43 @@ func (t *Tree) dir(baseName string) (*Tree, error) {
 }
 
 func (t *Tree) entry(baseName string) (*TreeEntry, error) {
-	if t.m == nil {
-		t.buildMap()
-	}
-
-	entry, ok := t.m[baseName]
-	if !ok {
+	if t.entriesSorted {
+		if entry := t.searchEntry(baseName); entry != nil {
+			return entry, nil
+		}
 		return nil, ErrEntryNotFound
 	}
 
-	return entry, nil
+	pastName := baseName + "/"
+	for i := range t.Entries {
+		entry := &t.Entries[i]
+		if entry.Name == baseName {
+			return entry, nil
+		}
+		if treeEntrySortName(entry) > pastName {
+			break
+		}
+	}
+
+	return nil, ErrEntryNotFound
+}
+
+func (t *Tree) searchEntry(baseName string) *TreeEntry {
+	if i := t.searchEntryIndex(baseName); i < len(t.Entries) && t.Entries[i].Name == baseName {
+		return &t.Entries[i]
+	}
+
+	if i := t.searchEntryIndex(baseName + "/"); i < len(t.Entries) && t.Entries[i].Name == baseName {
+		return &t.Entries[i]
+	}
+
+	return nil
+}
+
+func (t *Tree) searchEntryIndex(name string) int {
+	return sort.Search(len(t.Entries), func(i int) bool {
+		return treeEntrySortName(&t.Entries[i]) >= name
+	})
 }
 
 // Files returns a FileIter allowing to iterate over the Tree
@@ -212,20 +259,25 @@ func (t *Tree) Type() plumbing.ObjectType {
 	return plumbing.TreeObject
 }
 
+func (t *Tree) reset() {
+	storer := t.s
+	*t = Tree{s: storer}
+}
+
 // Decode transform an plumbing.EncodedObject into a Tree struct
 func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 	if o.Type() != plumbing.TreeObject {
 		return ErrUnsupportedObject
 	}
 
+	t.reset()
 	t.Hash = o.Hash()
+	// assume tree is sorted as a valid tree should always be sorted.
+	t.entriesSorted = true
 	if o.Size() == 0 {
 		return nil
 	}
 
-	t.Entries = nil
-	t.m = nil
-
 	reader, err := o.Reader()
 	if err != nil {
 		return err
@@ -235,10 +287,14 @@ func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 	r := sync.GetBufioReader(reader)
 	defer sync.PutBufioReader(r)
 
+	var prevSortName string
 	for {
 		str, err := r.ReadString(' ')
 		if err != nil {
 			if err == io.EOF {
+				if len(str) != 0 {
+					return fmt.Errorf("%w: missing mode terminator", ErrMalformedTree)
+				}
 				break
 			}
 
@@ -248,25 +304,41 @@ func (t *Tree) Decode(o plumbing.EncodedObject) (err error) {
 
 		mode, err := filemode.New(str)
 		if err != nil {
-			return err
+			return fmt.Errorf("%w: malformed mode", ErrMalformedTree)
 		}
+		mode = canonicalTreeMode(mode)
 
 		name, err := r.ReadString(0)
-		if err != nil && err != io.EOF {
+		if err != nil {
+			if err == io.EOF {
+				return fmt.Errorf("%w: missing filename terminator", ErrMalformedTree)
+			}
 			return err
 		}
+		if len(name) == 1 {
+			return fmt.Errorf("%w: empty filename", ErrMalformedTree)
+		}
 
 		var hash plumbing.Hash
 		if _, err = io.ReadFull(r, hash[:]); err != nil {
+			if errors.Is(err, io.EOF) || errors.Is(err, io.ErrUnexpectedEOF) {
+				return fmt.Errorf("%w: truncated object id", ErrMalformedTree)
+			}
 			return err
 		}
 
 		baseName := name[:len(name)-1]
-		t.Entries = append(t.Entries, TreeEntry{
+		entry := TreeEntry{
 			Hash: hash,
 			Mode: mode,
 			Name: baseName,
-		})
+		}
+		sortName := treeEntrySortName(&entry)
+		if len(t.Entries) != 0 && prevSortName > sortName {
+			t.entriesSorted = false
+		}
+		prevSortName = sortName
+		t.Entries = append(t.Entries, entry)
 	}
 
 	return nil
@@ -279,21 +351,37 @@ func (s TreeEntrySorter) Len() int {
 }
 
 func (s TreeEntrySorter) Less(i, j int) bool {
-	name1 := s[i].Name
-	name2 := s[j].Name
-	if s[i].Mode == filemode.Dir {
-		name1 += "/"
-	}
-	if s[j].Mode == filemode.Dir {
-		name2 += "/"
-	}
-	return name1 < name2
+	return treeEntrySortName(&s[i]) < treeEntrySortName(&s[j])
 }
 
 func (s TreeEntrySorter) Swap(i, j int) {
 	s[i], s[j] = s[j], s[i]
 }
 
+// Git compares tree entries as if directory names had a trailing slash.
+func treeEntrySortName(e *TreeEntry) string {
+	if e.Mode == filemode.Dir {
+		return e.Name + "/"
+	}
+	return e.Name
+}
+
+func canonicalTreeMode(mode filemode.FileMode) filemode.FileMode {
+	switch mode & 0o170000 {
+	case 0o040000:
+		return filemode.Dir
+	case 0o100000:
+		if mode&0o111 != 0 {
+			return filemode.Executable
+		}
+		return filemode.Regular
+	case 0o120000:
+		return filemode.Symlink
+	default:
+		return filemode.Submodule
+	}
+}
+
 // Encode transforms a Tree into a plumbing.EncodedObject.
 // The tree entries must be sorted by name.
 func (t *Tree) Encode(o plumbing.EncodedObject) (err error) {
@@ -329,13 +417,6 @@ func (t *Tree) Encode(o plumbing.EncodedObject) (err error) {
 	return err
 }
 
-func (t *Tree) buildMap() {
-	t.m = make(map[string]*TreeEntry)
-	for i := 0; i < len(t.Entries); i++ {
-		t.m[t.Entries[i].Name] = &t.Entries[i]
-	}
-}
-
 // Diff returns a list of changes between this tree and the provided one
 func (t *Tree) Diff(to *Tree) (Changes, error) {
 	return t.DiffContext(context.Background(), to)
@@ -455,6 +536,10 @@ func (w *TreeWalker) Next() (name string, entry TreeEntry, err error) {
 			continue
 		}
 
+		if err := pathutil.ValidTreePath(entry.Name); err != nil {
+			return name, entry, err
+		}
+
 		if entry.Mode == filemode.Dir {
 			obj, err = GetTree(w.s, entry.Hash)
 		}

vendor/github.com/go-git/go-git/v5/plumbing/transport/http/common.go

@@ -7,7 +7,6 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"fmt"
-	"net"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -24,6 +23,33 @@ import (
 	"github.com/go-git/go-git/v5/utils/ioutil"
 )
 
+type contextKey int
+
+const initialRequestKey contextKey = iota
+
+// RedirectPolicy controls how the HTTP transport follows redirects.
+//
+// The values mirror Git's http.followRedirects config:
+// "true" follows redirects for all requests, "false" treats redirects as
+// errors, and "initial" follows redirects only for the initial
+// /info/refs discovery request. The zero value defaults to "initial".
+type RedirectPolicy string
+
+const (
+	FollowInitialRedirects RedirectPolicy = "initial"
+	FollowRedirects        RedirectPolicy = "true"
+	NoFollowRedirects      RedirectPolicy = "false"
+)
+
+func withInitialRequest(ctx context.Context) context.Context {
+	return context.WithValue(ctx, initialRequestKey, true)
+}
+
+func isInitialRequest(req *http.Request) bool {
+	v, _ := req.Context().Value(initialRequestKey).(bool)
+	return v
+}
+
 // it requires a bytes.Buffer, because we need to know the length
 func applyHeadersToRequest(req *http.Request, content *bytes.Buffer, host string, requestType string) {
 	req.Header.Add("User-Agent", capability.DefaultAgent())
@@ -54,12 +80,15 @@ func advertisedReferences(ctx context.Context, s *session, serviceName string) (
 
 	s.ApplyAuthToRequest(req)
 	applyHeadersToRequest(req, nil, s.endpoint.Host, serviceName)
-	res, err := s.client.Do(req.WithContext(ctx))
+	res, err := s.client.Do(req.WithContext(withInitialRequest(ctx)))
 	if err != nil {
 		return nil, err
 	}
 
-	s.ModifyEndpointIfRedirect(res)
+	if err := s.ModifyEndpointIfRedirect(res); err != nil {
+		_ = res.Body.Close()
+		return nil, err
+	}
 	defer ioutil.CheckClose(res.Body, &err)
 
 	if err = NewErr(res); err != nil {
@@ -96,6 +125,7 @@ type client struct {
 	client     *http.Client
 	transports *lru.Cache
 	mutex      sync.RWMutex
+	follow     RedirectPolicy
 }
 
 // ClientOptions holds user configurable options for the client.
@@ -106,6 +136,11 @@ type ClientOptions struct {
 	// size, will result in the least recently used transport getting deleted
 	// before the provided transport is added to the cache.
 	CacheMaxEntries int
+
+	// RedirectPolicy controls redirect handling. Supported values are
+	// "true", "false", and "initial". The zero value defaults to
+	// "initial", matching Git's http.followRedirects default.
+	RedirectPolicy RedirectPolicy
 }
 
 var (
@@ -150,12 +185,16 @@ func NewClientWithOptions(c *http.Client, opts *ClientOptions) transport.Transpo
 	}
 	cl := &client{
 		client: c,
+		follow: FollowInitialRedirects,
 	}
 
 	if opts != nil {
 		if opts.CacheMaxEntries > 0 {
 			cl.transports = lru.New(opts.CacheMaxEntries)
 		}
+		if opts.RedirectPolicy != "" {
+			cl.follow = opts.RedirectPolicy
+		}
 	}
 	return cl
 }
@@ -289,14 +328,9 @@ func newSession(c *client, ep *transport.Endpoint, auth transport.AuthMethod) (*
 			}
 		}
 
-		httpClient = &http.Client{
-			Transport:     transport,
-			CheckRedirect: c.client.CheckRedirect,
-			Jar:           c.client.Jar,
-			Timeout:       c.client.Timeout,
-		}
+		httpClient = c.cloneHTTPClient(transport)
 	} else {
-		httpClient = c.client
+		httpClient = c.cloneHTTPClient(c.client.Transport)
 	}
 
 	s := &session{
@@ -324,30 +358,122 @@ func (s *session) ApplyAuthToRequest(req *http.Request) {
 	s.auth.SetAuth(req)
 }
 
-func (s *session) ModifyEndpointIfRedirect(res *http.Response) {
+func (s *session) ModifyEndpointIfRedirect(res *http.Response) error {
 	if res.Request == nil {
-		return
+		return nil
+	}
+	if s.endpoint == nil {
+		return fmt.Errorf("http redirect: nil endpoint")
 	}
 
 	r := res.Request
 	if !strings.HasSuffix(r.URL.Path, infoRefsPath) {
-		return
+		return fmt.Errorf("http redirect: target %q does not end with %s", r.URL.Path, infoRefsPath)
+	}
+	if r.URL.Scheme != "http" && r.URL.Scheme != "https" {
+		return fmt.Errorf("http redirect: unsupported scheme %q", r.URL.Scheme)
+	}
+	if r.URL.Scheme != s.endpoint.Protocol &&
+		!(s.endpoint.Protocol == "http" && r.URL.Scheme == "https") {
+		return fmt.Errorf("http redirect: changes scheme from %q to %q", s.endpoint.Protocol, r.URL.Scheme)
 	}
 
-	h, p, err := net.SplitHostPort(r.URL.Host)
+	host := endpointHost(r.URL.Hostname())
+	port, err := endpointPort(r.URL.Port())
 	if err != nil {
-		h = r.URL.Host
+		return err
 	}
-	if p != "" {
-		port, err := strconv.Atoi(p)
-		if err == nil {
-			s.endpoint.Port = port
-		}
+
+	if host != s.endpoint.Host || effectivePort(r.URL.Scheme, port) != effectivePort(s.endpoint.Protocol, s.endpoint.Port) {
+		s.endpoint.User = ""
+		s.endpoint.Password = ""
+		s.auth = nil
 	}
-	s.endpoint.Host = h
+
+	s.endpoint.Host = host
+	s.endpoint.Port = port
 
 	s.endpoint.Protocol = r.URL.Scheme
 	s.endpoint.Path = r.URL.Path[:len(r.URL.Path)-len(infoRefsPath)]
+	return nil
+}
+
+func endpointHost(host string) string {
+	if strings.Contains(host, ":") {
+		return "[" + host + "]"
+	}
+
+	return host
+}
+
+func endpointPort(port string) (int, error) {
+	if port == "" {
+		return 0, nil
+	}
+
+	parsed, err := strconv.Atoi(port)
+	if err != nil {
+		return 0, fmt.Errorf("http redirect: invalid port %q", port)
+	}
+
+	return parsed, nil
+}
+
+func effectivePort(scheme string, port int) int {
+	if port != 0 {
+		return port
+	}
+
+	switch strings.ToLower(scheme) {
+	case "http":
+		return 80
+	case "https":
+		return 443
+	default:
+		return 0
+	}
+}
+
+func (c *client) cloneHTTPClient(transport http.RoundTripper) *http.Client {
+	return &http.Client{
+		Transport:     transport,
+		CheckRedirect: wrapCheckRedirect(c.follow, c.client.CheckRedirect),
+		Jar:           c.client.Jar,
+		Timeout:       c.client.Timeout,
+	}
+}
+
+func wrapCheckRedirect(policy RedirectPolicy, next func(*http.Request, []*http.Request) error) func(*http.Request, []*http.Request) error {
+	return func(req *http.Request, via []*http.Request) error {
+		if err := checkRedirect(req, via, policy); err != nil {
+			return err
+		}
+		if next != nil {
+			return next(req, via)
+		}
+		return nil
+	}
+}
+
+func checkRedirect(req *http.Request, via []*http.Request, policy RedirectPolicy) error {
+	switch policy {
+	case FollowRedirects:
+	case NoFollowRedirects:
+		return fmt.Errorf("http redirect: redirects disabled to %s", req.URL)
+	case "", FollowInitialRedirects:
+		if !isInitialRequest(req) {
+			return fmt.Errorf("http redirect: redirect on non-initial request to %s", req.URL)
+		}
+	default:
+		return fmt.Errorf("http redirect: invalid redirect policy %q", policy)
+	}
+	if req.URL.Scheme != "http" && req.URL.Scheme != "https" {
+		return fmt.Errorf("http redirect: unsupported scheme %q", req.URL.Scheme)
+	}
+	if len(via) >= 10 {
+		return fmt.Errorf("http redirect: too many redirects")
+	}
+	return nil
 }
 
 func (*session) Close() error {

vendor/github.com/go-git/go-git/v5/plumbing/transport/ssh/common.go

@@ -252,7 +252,39 @@ func (c *command) setAuthFromEndpoint() error {
 }
 
 func endpointToCommand(cmd string, ep *transport.Endpoint) string {
-	return fmt.Sprintf("%s '%s'", cmd, ep.Path)
+	var b strings.Builder
+	b.WriteString(cmd)
+	b.WriteByte(' ')
+	writeShellQuote(&b, ep.Path)
+	return b.String()
+}
+
+// writeShellQuote writes s to b, wrapped in single quotes with
+// embedded single quotes and exclamation marks escaped using the
+// POSIX close-escape-reopen idiom:
+//
+//	' becomes '\''
+//	! becomes '\!'
+//
+// It is a direct port of canonical Git's sq_quote_buf (quote.c).
+// The bang escape keeps the result safe when re-evaluated under
+// csh-derived shells that perform history expansion. The output is
+// safe to pass as a single argument through any POSIX shell and
+// round-trips through git-shell's sq_dequote_to_argv.
+func writeShellQuote(b *strings.Builder, s string) {
+	b.Grow(len(s) + 2)
+	b.WriteByte('\'')
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if c == '\'' || c == '!' {
+			b.WriteString(`'\`)
+			b.WriteByte(c)
+			b.WriteByte('\'')
+			continue
+		}
+		b.WriteByte(c)
+	}
+	b.WriteByte('\'')
 }
 
 func overrideConfig(overrides *ssh.ClientConfig, c *ssh.ClientConfig) {

vendor/github.com/go-git/go-git/v5/repository.go

@@ -1530,7 +1530,18 @@ func (r *Repository) Worktree() (*Worktree, error) {
 		return nil, ErrIsBareRepository
 	}
 
-	return &Worktree{r: r, Filesystem: r.wt}, nil
+	protectNTFS := defaultProtectNTFS()
+	protectHFS := defaultProtectHFS()
+	if cfg, err := r.Config(); err == nil {
+		if cfg.Core.ProtectNTFS.IsSet() {
+			protectNTFS = cfg.Core.ProtectNTFS.IsTrue()
+		}
+		if cfg.Core.ProtectHFS.IsSet() {
+			protectHFS = cfg.Core.ProtectHFS.IsTrue()
+		}
+	}
+
+	return &Worktree{r: r, Filesystem: newWorktreeFilesystem(r.wt, protectNTFS, protectHFS)}, nil
 }
 
 func expand_ref(s storer.ReferenceStorer, ref plumbing.ReferenceName) (*plumbing.Reference, error) {

vendor/github.com/go-git/go-git/v5/storage/filesystem/dotgit/dotgit.go

@@ -75,6 +75,10 @@ var (
 	// ErrEmptyRefFile is returned when a reference file is attempted to be read,
 	// but the file is empty
 	ErrEmptyRefFile = errors.New("ref file is empty")
+	// ErrModuleNameEscape is returned when a submodule name would
+	// resolve outside the modules/ subtree, mirroring canonical Git's
+	// "ignoring suspicious submodule name" defence.
+	ErrModuleNameEscape = errors.New("submodule name escapes modules/ directory")
 )
 
 // Options holds configuration for the storage.
@@ -1127,9 +1131,20 @@ func (d *DotGit) PackRefs() (err error) {
 	return nil
 }
 
-// Module return a billy.Filesystem pointing to the module folder
+// Module returns a billy.Filesystem pointing to the module folder.
+//
+// As a defence in depth against submodule name path traversal,
+// refuse names whose joined path leaves the modules/ subtree once
+// cleaned. The config-layer parser also validates submodule names,
+// but Module may be reached from any caller that constructs a
+// Submodule struct programmatically and so bypasses the parser.
 func (d *DotGit) Module(name string) (billy.Filesystem, error) {
-	return d.fs.Chroot(d.fs.Join(modulePath, name))
+	p := d.fs.Join(modulePath, name)
+	cleaned := path.Clean(filepath.ToSlash(p))
+	if cleaned != modulePath && !strings.HasPrefix(cleaned, modulePath+"/") {
+		return nil, ErrModuleNameEscape
+	}
+	return d.fs.Chroot(p)
 }
 
 func (d *DotGit) AddAlternate(remote string) error {

vendor/github.com/go-git/go-git/v5/submodule.go

@@ -6,9 +6,12 @@ import (
 	"errors"
 	"fmt"
 	"path"
+	"path/filepath"
 
 	"github.com/go-git/go-billy/v5"
 	"github.com/go-git/go-git/v5/config"
+	"github.com/go-git/go-git/v5/internal/pathutil"
+	giturl "github.com/go-git/go-git/v5/internal/url"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/format/index"
 	"github.com/go-git/go-git/v5/plumbing/transport"
@@ -119,6 +122,16 @@ func (s *Submodule) Repository() (*Repository, error) {
 		exists = true
 	}
 
+	// s.c.Path is sourced from the worktree's .gitmodules and is
+	// therefore tree-controlled. Apply the strict tree-path validator
+	// before chroot — the wrapper's tolerant validPath would let a
+	// final-position .git component through (e.g. "submodule/.git"),
+	// which a malicious .gitmodules could use to chroot the submodule
+	// worktree into the repository's actual .git directory.
+	if err := pathutil.ValidTreePath(s.c.Path); err != nil {
+		return nil, err
+	}
+
 	var worktree billy.Filesystem
 	if worktree, err = s.w.Filesystem.Chroot(s.c.Path); err != nil {
 		return nil, err
@@ -138,18 +151,25 @@ func (s *Submodule) Repository() (*Repository, error) {
 		return nil, err
 	}
 
-	if !path.IsAbs(moduleEndpoint.Path) && moduleEndpoint.Protocol == "file" {
-		remotes, err := s.w.r.Remotes()
+	// A relative submodule URL such as "../X.git" must resolve against
+	// the parent repository's remote URL, not against the process CWD.
+	// Detect relativity from the raw configured URL because
+	// transport.NewEndpoint normalizes local paths to absolute form via
+	// filepath.Abs, which would otherwise mask the relative form here.
+	if giturl.IsLocalEndpoint(s.c.URL) &&
+		!path.IsAbs(s.c.URL) && !filepath.IsAbs(s.c.URL) {
+
+		base, err := defaultRemote(s.w.r)
+		if err != nil {
+			return nil, fmt.Errorf("resolving relative submodule URL: %w", err)
+		}
+
+		rootEndpoint, err := transport.NewEndpoint(base.URLs[0])
 		if err != nil {
 			return nil, err
 		}
 
-		rootEndpoint, err := transport.NewEndpoint(remotes[0].c.URLs[0])
-		if err != nil {
-			return nil, err
-		}
-
-		rootEndpoint.Path = path.Join(rootEndpoint.Path, moduleEndpoint.Path)
+		rootEndpoint.Path = path.Join(rootEndpoint.Path, s.c.URL)
 		*moduleEndpoint = *rootEndpoint
 	}
 
@@ -161,6 +181,52 @@ func (s *Submodule) Repository() (*Repository, error) {
 	return r, err
 }
 
+// defaultRemote returns the remote that relative submodule URLs are
+// resolved against, mirroring canonical Git's repo_default_remote
+// (remote.c) and resolve_relative_url (builtin/submodule--helper.c):
+//
+//  1. if HEAD is on a branch with branch.<name>.remote configured,
+//     use that remote;
+//  2. else if exactly one remote is configured, use it;
+//  3. otherwise fall back to DefaultRemoteName ("origin").
+//
+// Each rule falls through unconditionally: a branch lookup that
+// finds the branch but with an empty Remote does not short-circuit
+// rule (2). Returns an error when the chosen remote is not configured.
+func defaultRemote(r *Repository) (*config.RemoteConfig, error) {
+	cfg, err := r.Config()
+	if err != nil {
+		return nil, err
+	}
+
+	if ref, err := r.Reference(plumbing.HEAD, false); err == nil &&
+		ref.Type() == plumbing.SymbolicReference &&
+		ref.Target().IsBranch() {
+		if b, ok := cfg.Branches[ref.Target().Short()]; ok && b.Remote != "" {
+			return lookupRemote(cfg, b.Remote)
+		}
+	}
+
+	if len(cfg.Remotes) == 1 {
+		for name := range cfg.Remotes {
+			return lookupRemote(cfg, name)
+		}
+	}
+
+	return lookupRemote(cfg, DefaultRemoteName)
+}
+
+func lookupRemote(cfg *config.Config, name string) (*config.RemoteConfig, error) {
+	rc, ok := cfg.Remotes[name]
+	if !ok {
+		return nil, fmt.Errorf("remote %q not found", name)
+	}
+	if len(rc.URLs) == 0 {
+		return nil, fmt.Errorf("remote %q has no configured URL", name)
+	}
+	return rc, nil
+}
+
 // Update the registered submodule to match what the superproject expects, the
 // submodule should be initialized first calling the Init method or setting in
 // the options SubmoduleUpdateOptions.Init equals true

vendor/github.com/go-git/go-git/v5/utils/binary/read.go

@@ -5,11 +5,18 @@ package binary
 import (
 	"bufio"
 	"encoding/binary"
+	"errors"
 	"io"
+	"math"
 
 	"github.com/go-git/go-git/v5/plumbing"
 )
 
+// ErrIntegerOverflow is returned when a Git-format variable-width integer
+// would not fit into an int64 because the input declares more continuation
+// bytes than the type can hold.
+var ErrIntegerOverflow = errors.New("variable-width integer overflow")
+
 // Read reads structured binary data from r into data. Bytes are read and
 // decoded in BigEndian order
 // https://golang.org/pkg/encoding/binary/#Read
@@ -92,6 +99,14 @@ func ReadVariableWidthInt(r io.Reader) (int64, error) {
 
 	var v = int64(c & maskLength)
 	for c&maskContinue > 0 {
+		// Reject input that, after the v++ and shift below, would
+		// not fit in an int64. With v < (MaxInt64-127)>>7, the
+		// post-increment v is at most (MaxInt64-127)>>7 and the
+		// final (v << 7) + (c & 0x7F) stays within int64.
+		if v >= (math.MaxInt64-int64(maskLength))>>lengthBits {
+			return 0, ErrIntegerOverflow
+		}
+
 		v++
 		if err := Read(r, &c); err != nil {
 			return 0, err

vendor/github.com/go-git/go-git/v5/worktree.go

@@ -7,7 +7,6 @@ import (
 	"io"
 	"os"
 	"path/filepath"
-	"runtime"
 	"strings"
 
 	"github.com/go-git/go-billy/v5"
@@ -458,10 +457,6 @@ func (w *Worktree) resetWorktree(t *object.Tree, files []string) error {
 
 	filesMap := buildFilePathMap(files)
 	for _, ch := range changes {
-		if err := w.validChange(ch); err != nil {
-			return err
-		}
-
 		if len(files) > 0 {
 			file := ""
 			if ch.From != nil {
@@ -489,108 +484,6 @@ func (w *Worktree) resetWorktree(t *object.Tree, files []string) error {
 	return w.r.Storer.SetIndex(idx)
 }
 
-// worktreeDeny is a list of paths that are not allowed
-// to be used when resetting the worktree.
-var worktreeDeny = map[string]struct{}{
-	// .git
-	GitDirName: {},
-
-	// For other historical reasons, file names that do not conform to the 8.3
-	// format (up to eight characters for the basename, three for the file
-	// extension, certain characters not allowed such as `+`, etc) are associated
-	// with a so-called "short name", at least on the `C:` drive by default.
-	// Which means that `git~1/` is a valid way to refer to `.git/`.
-	"git~1": {},
-}
-
-// validPath checks whether paths are valid.
-// The rules around invalid paths could differ from upstream based on how
-// filesystems are managed within go-git, but they are largely the same.
-//
-// For upstream rules:
-// https://github.com/git/git/blob/564d0252ca632e0264ed670534a51d18a689ef5d/read-cache.c#L946
-// https://github.com/git/git/blob/564d0252ca632e0264ed670534a51d18a689ef5d/path.c#L1383
-func validPath(paths ...string) error {
-	for _, p := range paths {
-		parts := strings.FieldsFunc(p, func(r rune) bool { return (r == '\\' || r == '/') })
-		if len(parts) == 0 {
-			return fmt.Errorf("invalid path: %q", p)
-		}
-
-		if _, denied := worktreeDeny[strings.ToLower(parts[0])]; denied {
-			return fmt.Errorf("invalid path prefix: %q", p)
-		}
-
-		if runtime.GOOS == "windows" {
-			// Volume names are not supported, in both formats: \\ and <DRIVE_LETTER>:.
-			if vol := filepath.VolumeName(p); vol != "" {
-				return fmt.Errorf("invalid path: %q", p)
-			}
-
-			if !windowsValidPath(parts[0]) {
-				return fmt.Errorf("invalid path: %q", p)
-			}
-		}
-
-		for _, part := range parts {
-			if part == ".." {
-				return fmt.Errorf("invalid path %q: cannot use '..'", p)
-			}
-		}
-	}
-	return nil
-}
-
-// windowsPathReplacer defines the chars that need to be replaced
-// as part of windowsValidPath.
-var windowsPathReplacer *strings.Replacer
-
-func init() {
-	windowsPathReplacer = strings.NewReplacer(" ", "", ".", "")
-}
-
-func windowsValidPath(part string) bool {
-	if len(part) > 3 && strings.EqualFold(part[:4], GitDirName) {
-		// For historical reasons, file names that end in spaces or periods are
-		// automatically trimmed. Therefore, `.git . . ./` is a valid way to refer
-		// to `.git/`.
-		if windowsPathReplacer.Replace(part[4:]) == "" {
-			return false
-		}
-
-		// For yet other historical reasons, NTFS supports so-called "Alternate Data
-		// Streams", i.e. metadata associated with a given file, referred to via
-		// `<filename>:<stream-name>:<stream-type>`. There exists a default stream
-		// type for directories, allowing `.git/` to be accessed via
-		// `.git::$INDEX_ALLOCATION/`.
-		//
-		// For performance reasons, _all_ Alternate Data Streams of `.git/` are
-		// forbidden, not just `::$INDEX_ALLOCATION`.
-		if len(part) > 4 && part[4:5] == ":" {
-			return false
-		}
-	}
-	return true
-}
-
-func (w *Worktree) validChange(ch merkletrie.Change) error {
-	action, err := ch.Action()
-	if err != nil {
-		return nil
-	}
-
-	switch action {
-	case merkletrie.Delete:
-		return validPath(ch.From.String())
-	case merkletrie.Insert:
-		return validPath(ch.To.String())
-	case merkletrie.Modify:
-		return validPath(ch.From.String(), ch.To.String())
-	}
-
-	return nil
-}
-
 func (w *Worktree) checkoutChange(ch merkletrie.Change, t *object.Tree, idx *indexBuilder) error {
 	a, err := ch.Action()
 	if err != nil {
@@ -763,10 +656,10 @@ func (w *Worktree) checkoutFile(f *object.File) (err error) {
 }
 
 func (w *Worktree) checkoutFileSymlink(f *object.File) (err error) {
-	// https://github.com/git/git/commit/10ecfa76491e4923988337b2e2243b05376b40de
-	if strings.EqualFold(f.Name, gitmodulesFile) {
-		return ErrGitModulesSymlink
-	}
+	// .gitmodules symlink rejection (and its NTFS / HFS variants) is
+	// enforced by the worktreeFilesystem wrapper's Symlink method via
+	// validSymlinkName. See https://github.com/git/git/commit/10ecfa7
+	// for the upstream rationale.
 
 	from, err := f.Reader()
 	if err != nil {

vendor/github.com/go-git/go-git/v5/worktree_fs.go

@@ -0,0 +1,264 @@
+package git
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+
+	"github.com/go-git/go-billy/v5"
+
+	"github.com/go-git/go-git/v5/internal/pathutil"
+)
+
+// defaultProtectHFS returns the default value for core.protectHFS
+// when not explicitly configured. Matches upstream Git's
+// PROTECT_HFS_DEFAULT[1], which the Makefile sets to 1 on Darwin
+// and leaves at 0 on every other platform.
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/config.mak.uname#L146
+func defaultProtectHFS() bool {
+	return runtime.GOOS == "darwin"
+}
+
+// defaultProtectNTFS returns the default value for core.protectNTFS
+// when not explicitly configured. Matches upstream Git's
+// PROTECT_NTFS_DEFAULT, which has been 1 on every platform since
+// 9102f958ee5 (CVE-2019-1353)[1]: WSL allows Linux processes to
+// reach NTFS-mounted worktrees on Windows hosts, so the
+// is_ntfs_dotgit guard cannot safely be gated on the runtime OS.
+//
+// [1]: https://github.com/git/git/commit/9102f958ee5
+func defaultProtectNTFS() bool {
+	return true
+}
+
+// worktreeFilesystem wraps a billy.Filesystem and validates every path passed
+// to a mutating operation. This prevents writing to, or deleting from,
+// dangerous locations (e.g. .git/*, ../) regardless of which worktree
+// code path triggers the operation.
+type worktreeFilesystem struct {
+	billy.Filesystem
+	protectNTFS bool
+	protectHFS  bool
+}
+
+func newWorktreeFilesystem(fs billy.Filesystem, protectNTFS, protectHFS bool) *worktreeFilesystem {
+	return &worktreeFilesystem{Filesystem: fs, protectNTFS: protectNTFS, protectHFS: protectHFS}
+}
+
+func (sfs *worktreeFilesystem) Create(filename string) (billy.File, error) {
+	if err := sfs.validPath(filename); err != nil {
+		return nil, fmt.Errorf("create: %w", err)
+	}
+	return sfs.Filesystem.Create(filename)
+}
+
+func (sfs *worktreeFilesystem) Open(filename string) (billy.File, error) {
+	if err := sfs.validReadPath(filename); err != nil {
+		return nil, fmt.Errorf("open: %w", err)
+	}
+	return sfs.Filesystem.Open(filename)
+}
+
+func (sfs *worktreeFilesystem) OpenFile(filename string, flag int, perm os.FileMode) (billy.File, error) {
+	if err := sfs.validPath(filename); err != nil {
+		return nil, fmt.Errorf("openfile: %w", err)
+	}
+	return sfs.Filesystem.OpenFile(filename, flag, perm)
+}
+
+func (sfs *worktreeFilesystem) Stat(filename string) (os.FileInfo, error) {
+	if err := sfs.validReadPath(filename); err != nil {
+		return nil, fmt.Errorf("stat: %w", err)
+	}
+	return sfs.Filesystem.Stat(filename)
+}
+
+func (sfs *worktreeFilesystem) Remove(filename string) error {
+	if err := sfs.validPath(filename); err != nil {
+		return fmt.Errorf("remove: %w", err)
+	}
+	return sfs.Filesystem.Remove(filename)
+}
+
+func (sfs *worktreeFilesystem) Rename(from, to string) error {
+	if err := sfs.validPath(from, to); err != nil {
+		return fmt.Errorf("rename: %w", err)
+	}
+	return sfs.Filesystem.Rename(from, to)
+}
+
+func (sfs *worktreeFilesystem) ReadDir(path string) ([]os.FileInfo, error) {
+	if err := sfs.validReadPath(path); err != nil {
+		return nil, fmt.Errorf("readdir: %w", err)
+	}
+	return sfs.Filesystem.ReadDir(path)
+}
+
+func (sfs *worktreeFilesystem) Lstat(filename string) (os.FileInfo, error) {
+	if err := sfs.validReadPath(filename); err != nil {
+		return nil, fmt.Errorf("lstat: %w", err)
+	}
+	return sfs.Filesystem.Lstat(filename)
+}
+
+func (sfs *worktreeFilesystem) Symlink(target, link string) error {
+	if err := sfs.validPath(link); err != nil {
+		return fmt.Errorf("symlink: %w", err)
+	}
+	if err := sfs.validSymlinkName(link); err != nil {
+		return fmt.Errorf("symlink: %w", err)
+	}
+	return sfs.Filesystem.Symlink(target, link)
+}
+
+func (sfs *worktreeFilesystem) Readlink(link string) (string, error) {
+	if err := sfs.validReadPath(link); err != nil {
+		return "", fmt.Errorf("readlink: %w", err)
+	}
+	return sfs.Filesystem.Readlink(link)
+}
+
+func (sfs *worktreeFilesystem) MkdirAll(path string, perm os.FileMode) error {
+	// MkdirAll on the worktree root is a no-op: the root always exists,
+	// so there is nothing to materialise. Mirroring the tolerance that
+	// validReadPath gives to read-side operations avoids breaking callers
+	// that walk a directory tree and pass the relative-to-root prefix
+	// ("") through to the worktree FS.
+	if path == "" || path == "." || path == "/" {
+		return nil
+	}
+	if err := sfs.validPath(path); err != nil {
+		return fmt.Errorf("mkdirall: %w", err)
+	}
+	return sfs.Filesystem.MkdirAll(path, perm)
+}
+
+func (sfs *worktreeFilesystem) TempFile(_, _ string) (billy.File, error) {
+	return nil, fmt.Errorf("tempfile: %w", errUnsupportedOperation)
+}
+
+func (sfs *worktreeFilesystem) Chroot(path string) (billy.Filesystem, error) {
+	if err := sfs.validReadPath(path); err != nil {
+		return nil, fmt.Errorf("chroot: %w", err)
+	}
+	return sfs.Filesystem.Chroot(path)
+}
+
+// validReadPath is like validPath but treats the empty string and "." as
+// valid references to the worktree root. Read-side operations on the root
+// (e.g. ReadDir(""), Lstat(".")) are legitimate; mutating the root itself
+// is not, so write-side operations continue to use validPath directly.
+func (sfs *worktreeFilesystem) validReadPath(p string) error {
+	if p == "" || p == "." || p == "/" {
+		return nil
+	}
+	return sfs.validPath(p)
+}
+
+var errUnsupportedOperation = errors.New("unsupported operation")
+
+// isDotGitVariant reports whether part is .git, git~1, or an HFS+
+// equivalent of .git (when protectHFS is true). NTFS variants of .git
+// (e.g. ".git " with trailing space, ".git::$INDEX_ALLOCATION") are
+// detected separately by pathutil.WindowsValidPath, which applies
+// regardless of position in the path. Both validators reuse this
+// helper.
+func isDotGitVariant(part string, protectHFS bool) bool {
+	if pathutil.IsDotGitName(part) {
+		return true
+	}
+	if protectHFS && pathutil.IsHFSDotGit(part) {
+		return true
+	}
+	return false
+}
+
+// validPath checks whether paths are valid for the worktree
+// filesystem abstraction. It is intentionally tolerant of .git as
+// the final path component of a multi-component path
+// (e.g. "submodule/.git"), so that legitimate gitlink pointer files
+// can still be Stat'd, Read, and Removed via the wrapper during
+// submodule cleanup. Attacker-controlled tree-entry paths are
+// validated separately by pathutil.ValidTreePath at the boundaries
+// where data leaves the trusted store (Tree.FindEntry, the explicit
+// callers in CherryPick and Submodule.Repository).
+//
+// For upstream rules:
+// https://github.com/git/git/blob/v2.54.0/read-cache.c#L987
+// https://github.com/git/git/blob/v2.54.0/path.c#L1419
+func (sfs *worktreeFilesystem) validPath(paths ...string) error {
+	for _, p := range paths {
+		for i := 0; i < len(p); i++ {
+			if p[i] < 0x20 || p[i] == 0x7f {
+				return fmt.Errorf("invalid path %q: contains control character", p)
+			}
+		}
+
+		parts := strings.FieldsFunc(p, func(r rune) bool { return (r == '\\' || r == '/') })
+		if len(parts) == 0 {
+			return fmt.Errorf("invalid path: %q", p)
+		}
+
+		if sfs.protectNTFS {
+			// Volume names are not supported, in both formats: \\ and <DRIVE_LETTER>:.
+			if vol := filepath.VolumeName(p); vol != "" {
+				return fmt.Errorf("invalid path: %q", p)
+			}
+		}
+
+		for i, part := range parts {
+			if part == "." || part == ".." {
+				return fmt.Errorf("invalid path %q: cannot use %q", p, part)
+			}
+
+			// Reject .git (and equivalents) as a path component when it is
+			// either the first component (root-level .git) or a non-final
+			// component (traversal into a .git directory, e.g. "a/.git/config").
+			// A final non-first .git component (e.g. "submodule/.git") is
+			// allowed because submodule worktrees contain a .git pointer file.
+			if isDotGitVariant(part, sfs.protectHFS) && (i == 0 || i < len(parts)-1) {
+				return fmt.Errorf("invalid path component: %q", p)
+			}
+
+			if sfs.protectNTFS && !pathutil.WindowsValidPath(part) {
+				return fmt.Errorf("invalid path: %q", p)
+			}
+		}
+	}
+	return nil
+}
+
+// validSymlinkName checks the per-component name of a symlink for
+// dotfile names that attackers can use to trick a checkout into
+// writing a dangerous symlink. Each path component is compared
+// against .gitmodules case-insensitively, against its NTFS variants
+// (e.g. ".gitmodules .", ".gitmodules::$INDEX_ALLOCATION", or 8.3
+// short-name forms) when protectNTFS is on, and against its HFS+
+// variants (Unicode ignored code points folded into ".gitmodules")
+// when protectHFS is on.
+//
+// Reference: upstream Git verify_path_internal at read-cache.c#L1004-L1024
+// in tag v2.54.0[1].
+//
+// [1]: https://github.com/git/git/blob/v2.54.0/read-cache.c#L1004-L1024
+func (sfs *worktreeFilesystem) validSymlinkName(name string) error {
+	parts := strings.FieldsFunc(name, func(r rune) bool {
+		return r == '/' || r == '\\'
+	})
+	for _, part := range parts {
+		if strings.EqualFold(part, gitmodulesFile) {
+			return ErrGitModulesSymlink
+		}
+		if sfs.protectNTFS && pathutil.IsNTFSDotGitmodules(part) {
+			return ErrGitModulesSymlink
+		}
+		if sfs.protectHFS && pathutil.IsHFSDotGitmodules(part) {
+			return ErrGitModulesSymlink
+		}
+	}
+	return nil
+}

vendor/github.com/go-git/go-git/v5/worktree_status.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"github.com/go-git/go-billy/v5/util"
+	"github.com/go-git/go-git/v5/internal/pathutil"
 	"github.com/go-git/go-git/v5/plumbing"
 	"github.com/go-git/go-git/v5/plumbing/filemode"
 	"github.com/go-git/go-git/v5/plumbing/format/gitignore"
@@ -545,6 +546,14 @@ func (w *Worktree) addOrUpdateFileToIndex(idx *index.Index, filename string, h p
 }
 
 func (w *Worktree) doAddFileToIndex(idx *index.Index, filename string, h plumbing.Hash) error {
+	// Mirror upstream's Index.Add gate at the v5 caller boundary: the
+	// index feeds future trees, so a name that the tree-side
+	// pathutil.ValidTreePath gate would reject must not enter the
+	// index in the first place. v5 keeps Index.Add's existing signature
+	// for API compatibility, so the validation happens here.
+	if err := pathutil.ValidTreePath(filename); err != nil {
+		return err
+	}
 	return w.doUpdateFileToIndex(idx.Add(filename), filename, h)
 }
 

vendor/github.com/pjbgf/sha1cd/Dockerfile.arm

@@ -1,4 +1,4 @@
-FROM golang:1.24@sha256:14fd8a55e59a560704e5fc44970b301d00d344e45d6b914dda228e09f359a088
+FROM golang:1.26@sha256:6df14f4a4bc9d979a3721f488981e0d1b318006377e473ed23d026796f5f4c0a
 
 ENV GOOS=linux
 ENV GOARCH=arm

vendor/github.com/pjbgf/sha1cd/Dockerfile.arm64

@@ -1,4 +1,4 @@
-FROM golang:1.24@sha256:14fd8a55e59a560704e5fc44970b301d00d344e45d6b914dda228e09f359a088
+FROM golang:1.26@sha256:6df14f4a4bc9d979a3721f488981e0d1b318006377e473ed23d026796f5f4c0a
 
 ENV GOOS=linux
 ENV GOARCH=arm64

vendor/github.com/pjbgf/sha1cd/sha1cd.go

@@ -12,7 +12,6 @@ package sha1cd
 // Original: https://github.com/golang/go/blob/master/src/crypto/sha1/sha1.go
 
 import (
-	"crypto"
 	"encoding/binary"
 	"errors"
 	"hash"
@@ -20,10 +19,6 @@ import (
 	shared "github.com/pjbgf/sha1cd/internal"
 )
 
-func init() {
-	crypto.RegisterHash(crypto.SHA1, New)
-}
-
 // The size of a SHA-1 checksum in bytes.
 const Size = shared.Size
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_amd64.go

@@ -37,9 +37,9 @@ func block(dig *digest, p []byte) {
 		chunk := p[:shared.Chunk]
 
 		blockAMD64(dig.h[:], chunk, m1[:], cs[:])
-		rectifyCompressionState(m1, &cs)
+		rectifyCompressionState(&m1, &cs)
 
-		col := checkCollision(m1, cs, dig.h)
+		col := checkCollision(&m1, &cs, &dig.h)
 		if col {
 			dig.col = true
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_amd64.s

@@ -11,11 +11,11 @@
 // Reference implementations:
 // 	- https://github.com/golang/go/blob/master/src/crypto/sha1/sha1block_amd64.s
 
+// Reverse the dword order in abcd via PSHUFD then store the 16 bytes in one
+// move, instead of issuing four VPEXTRD's that each go through the store port.
 #define LOADCS(abcd, e, index, target) \
-	VPEXTRD $3, abcd, ((index*20)+0)(target); \
-	VPEXTRD $2, abcd, ((index*20)+4)(target); \
-	VPEXTRD $1, abcd, ((index*20)+8)(target); \
-	VPEXTRD $0, abcd, ((index*20)+12)(target); \
+	VPSHUFD $0x1B, abcd, X8; \
+	VMOVDQU X8, ((index*20)+0)(target); \
 	MOVL e, ((index*20)+16)(target);
 
 #define LOADM1(m1, index, target) \

vendor/github.com/pjbgf/sha1cd/sha1cdblock_arm64.go

@@ -34,8 +34,8 @@ func block(dig *digest, p []byte) {
 
 		blockARM64(dig.h[:], chunk, m1[:], cs[:])
 
-		rectifyCompressionState(m1, &cs)
-		col := checkCollision(m1, cs, dig.h)
+		rectifyCompressionState(&m1, &cs)
+		col := checkCollision(&m1, &cs, &dig.h)
 		if col {
 			dig.col = true
 

vendor/github.com/pjbgf/sha1cd/sha1cdblock_generic.go

@@ -127,7 +127,8 @@ func blockGeneric(dig *digest, p []byte) {
 		}
 
 		if hi == 1 {
-			col := checkCollision(m1, cs, [shared.WordBuffers]uint32{h0, h1, h2, h3, h4})
+			h := [shared.WordBuffers]uint32{h0, h1, h2, h3, h4}
+			col := checkCollision(&m1, &cs, &h)
 			if col {
 				dig.col = true
 				hi++
@@ -143,23 +144,23 @@ func blockGeneric(dig *digest, p []byte) {
 
 //go:noinline
 func checkCollision(
-	m1 [shared.Rounds]uint32,
-	cs [shared.PreStepState][shared.WordBuffers]uint32,
-	h [shared.WordBuffers]uint32,
+	m1 *[shared.Rounds]uint32,
+	cs *[shared.PreStepState][shared.WordBuffers]uint32,
+	h *[shared.WordBuffers]uint32,
 ) bool {
 	if mask := ubc.CalculateDvMask(m1); mask != 0 {
 		dvs := ubc.SHA1_dvs()
 
 		for i := 0; dvs[i].DvType != 0; i++ {
 			if (mask & ((uint32)(1) << uint32(dvs[i].MaskB))) != 0 {
-				var csState [shared.WordBuffers]uint32
+				var csState *[shared.WordBuffers]uint32
 				switch dvs[i].TestT {
 				case 58:
-					csState = cs[1]
+					csState = &cs[1]
 				case 65:
-					csState = cs[2]
+					csState = &cs[2]
 				case 0:
-					csState = cs[0]
+					csState = &cs[0]
 				default:
 					panic(fmt.Sprintf("dvs data is trying to use a testT that isn't available: %d", dvs[i].TestT))
 				}
@@ -168,7 +169,7 @@ func checkCollision(
 					dvs[i].TestT, // testT is the step number
 					// m2 is a secondary message created XORing with
 					// ubc's DM prior to the SHA recompression step.
-					m1, dvs[i].Dm,
+					m1, &dvs[i].Dm,
 					csState,
 					h)
 
@@ -182,8 +183,8 @@ func checkCollision(
 }
 
 //go:nosplit
-func hasCollided(step uint32, m1, dm [shared.Rounds]uint32,
-	state [shared.WordBuffers]uint32, h [shared.WordBuffers]uint32) bool {
+func hasCollided(step uint32, m1, dm *[shared.Rounds]uint32,
+	state *[shared.WordBuffers]uint32, h *[shared.WordBuffers]uint32) bool {
 	// Intermediary Hash Value.
 	ihv := [shared.WordBuffers]uint32{}
 
@@ -282,7 +283,7 @@ func hasCollided(step uint32, m1, dm [shared.Rounds]uint32,
 //
 //go:nosplit
 func rectifyCompressionState(
-	m1 [shared.Rounds]uint32,
+	m1 *[shared.Rounds]uint32,
 	cs *[shared.PreStepState][shared.WordBuffers]uint32,
 ) {
 	if cs == nil {

vendor/github.com/pjbgf/sha1cd/ubc/ubc.go

@@ -29,7 +29,10 @@ type DvInfo struct {
 // bitconditions for that DV have been met.
 //
 //go:nosplit
-func CalculateDvMask(W [80]uint32) uint32 {
+func CalculateDvMask(W *[80]uint32) uint32 {
+	if W == nil {
+		return 0
+	}
 	mask := uint32(0xFFFFFFFF)
 	mask &= (((((W[44] ^ W[45]) >> 29) & 1) - 1) | ^(DV_I_48_0_bit | DV_I_51_0_bit | DV_I_52_0_bit | DV_II_45_0_bit | DV_II_46_0_bit | DV_II_50_0_bit | DV_II_51_0_bit))
 	mask &= (((((W[49] ^ W[50]) >> 29) & 1) - 1) | ^(DV_I_46_0_bit | DV_II_45_0_bit | DV_II_50_0_bit | DV_II_51_0_bit | DV_II_55_0_bit | DV_II_56_0_bit))

vendor/github.com/spf13/cobra/command.go

@@ -925,15 +925,10 @@ func (c *Command) execute(a []string) (err error) {
 	// Also say we need help if the command isn't runnable.
 	helpVal, err := c.Flags().GetBool(helpFlagName)
 	if err != nil {
-		// NOTE(d1): temporarily hardcoding "ayuda" as a replacement for "help"
-		//           source of the pain: https://github.com/spf13/cobra/issues/2359
-		helpVal, err = c.Flags().GetBool("ayuda")
-		if err != nil {
-			// should be impossible to get here as we always declare a help
-			// flag in InitDefaultHelpFlag()
-			c.Println("\"help\" flag declared as non-bool. Please correct your code")
-			return err
-		}
+		// should be impossible to get here as we always declare a help
+		// flag in InitDefaultHelpFlag()
+		c.Println("\"help\" flag declared as non-bool. Please correct your code")
+		return err
 	}
 
 	if helpVal {
@@ -1231,8 +1226,7 @@ func (c *Command) InitDefaultHelpFlag() {
 		} else {
 			usage += name
 		}
-		// NOTE(d1): do not assume "help" exists in the context of translation
-		// c.Flags().BoolP(helpFlagName, "h", false, usage)
+		c.Flags().BoolP(helpFlagName, "h", false, usage)
 		_ = c.Flags().SetAnnotation(helpFlagName, FlagSetByCobraAnnotation, []string{"true"})
 	}
 }

vendor/golang.org/x/crypto/ssh/cipher.go

@@ -586,7 +586,7 @@ func (c *cbcCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader
 
 	// Length of encrypted portion of the packet (header, payload, padding).
 	// Enforce minimum padding and packet size.
-	encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPaddingSize)
+	encLength := maxUInt32(prefixLen+len(packet)+cbcMinPaddingSize, cbcMinPacketSize)
 	// Enforce block size.
 	encLength = (encLength + effectiveBlockSize - 1) / effectiveBlockSize * effectiveBlockSize
 

vendor/golang.org/x/crypto/ssh/client_auth.go

@@ -274,10 +274,14 @@ func pickSignatureAlgorithm(signer Signer, extensions map[string][]byte) (MultiA
 	}
 
 	// Filter algorithms based on those supported by MultiAlgorithmSigner.
+	// Iterate over the signer's algorithms first to preserve its preference order.
+	supportedKeyAlgos := algorithmsForKeyFormat(keyFormat)
 	var keyAlgos []string
-	for _, algo := range algorithmsForKeyFormat(keyFormat) {
-		if slices.Contains(as.Algorithms(), underlyingAlgo(algo)) {
-			keyAlgos = append(keyAlgos, algo)
+	for _, signerAlgo := range as.Algorithms() {
+		if idx := slices.IndexFunc(supportedKeyAlgos, func(algo string) bool {
+			return underlyingAlgo(algo) == signerAlgo
+		}); idx >= 0 {
+			keyAlgos = append(keyAlgos, supportedKeyAlgos[idx])
 		}
 	}
 

vendor/golang.org/x/net/http2/hpack/tables.go

@@ -6,6 +6,7 @@ package hpack
 
 import (
 	"fmt"
+	"strings"
 )
 
 // headerFieldTable implements a list of HeaderFields.
@@ -54,10 +55,16 @@ func (t *headerFieldTable) len() int {
 
 // addEntry adds a new entry.
 func (t *headerFieldTable) addEntry(f HeaderField) {
+	// Prevent f from escaping to the heap.
+	f2 := HeaderField{
+		Name:      strings.Clone(f.Name),
+		Value:     strings.Clone(f.Value),
+		Sensitive: f.Sensitive,
+	}
 	id := uint64(t.len()) + t.evictCount + 1
-	t.byName[f.Name] = id
-	t.byNameValue[pairNameValue{f.Name, f.Value}] = id
-	t.ents = append(t.ents, f)
+	t.byName[f2.Name] = id
+	t.byNameValue[pairNameValue{f2.Name, f2.Value}] = id
+	t.ents = append(t.ents, f2)
 }
 
 // evictOldest evicts the n oldest entries in the table.

vendor/golang.org/x/net/http2/transport.go

@@ -718,9 +718,6 @@ func canRetryError(err error) bool {
 }
 
 func (t *Transport) dialClientConn(ctx context.Context, addr string, singleUse bool) (*ClientConn, error) {
-	if t.transportTestHooks != nil {
-		return t.newClientConn(nil, singleUse, nil)
-	}
 	host, _, err := net.SplitHostPort(addr)
 	if err != nil {
 		return nil, err
@@ -2861,6 +2858,9 @@ func (rl *clientConnReadLoop) processSettingsNoWrite(f *SettingsFrame) error {
 
 	var seenMaxConcurrentStreams bool
 	err := f.ForeachSetting(func(s Setting) error {
+		if err := s.Valid(); err != nil {
+			return err
+		}
 		switch s.ID {
 		case SettingMaxFrameSize:
 			cc.maxFrameSize = s.Val
@@ -2892,9 +2892,6 @@ func (rl *clientConnReadLoop) processSettingsNoWrite(f *SettingsFrame) error {
 			cc.henc.SetMaxDynamicTableSize(s.Val)
 			cc.peerMaxHeaderTableSize = s.Val
 		case SettingEnableConnectProtocol:
-			if err := s.Valid(); err != nil {
-				return err
-			}
 			// If the peer wants to send us SETTINGS_ENABLE_CONNECT_PROTOCOL,
 			// we require that it do so in the first SETTINGS frame.
 			//

vendor/golang.org/x/sys/cpu/cpu.go

@@ -152,13 +152,17 @@ var ARM struct {
 // The booleans in Loong64 contain the correspondingly named cpu feature bit.
 // The struct is padded to avoid false sharing.
 var Loong64 struct {
-	_         CacheLinePad
-	HasLSX    bool // support 128-bit vector extension
-	HasLASX   bool // support 256-bit vector extension
-	HasCRC32  bool // support CRC instruction
-	HasLAM_BH bool // support AM{SWAP/ADD}[_DB].{B/H} instruction
-	HasLAMCAS bool // support AMCAS[_DB].{B/H/W/D} instruction
-	_         CacheLinePad
+	_              CacheLinePad
+	HasLSX         bool // support 128-bit vector extension
+	HasLASX        bool // support 256-bit vector extension
+	HasCRC32       bool // support CRC instruction
+	HasLAMCAS      bool // support AMCAS[_DB].{B/H/W/D}
+	HasLAM_BH      bool // support AM{SWAP/ADD}[_DB].{B/H} instruction
+	HasLLACQ_SCREL bool // support LLACQ.{W/D}, SCREL.{W/D} instruction
+	HasSCQ         bool // support SC.Q instruction
+	HasDBAR_HINTS  bool // supports finer-grained DBAR hints
+
+	_ CacheLinePad
 }
 
 // MIPS64X contains the supported CPU features of the current mips64/mips64le
@@ -232,6 +236,7 @@ var RISCV64 struct {
 	HasZba            bool // Address generation instructions extension
 	HasZbb            bool // Basic bit-manipulation extension
 	HasZbs            bool // Single-bit instructions extension
+	HasZbc            bool // Carryless multiplication extension
 	HasZvbb           bool // Vector Basic Bit-manipulation
 	HasZvbc           bool // Vector Carryless Multiplication
 	HasZvkb           bool // Vector Cryptography Bit-manipulation

vendor/golang.org/x/sys/cpu/cpu_darwin_arm64_other.go

@@ -6,6 +6,8 @@
 
 package cpu
 
+import "runtime"
+
 func doinit() {
 	setMinimalFeatures()
 

vendor/golang.org/x/sys/cpu/cpu_linux_riscv64.go

@@ -58,6 +58,7 @@ const (
 	riscv_HWPROBE_EXT_ZBA         = 0x8
 	riscv_HWPROBE_EXT_ZBB         = 0x10
 	riscv_HWPROBE_EXT_ZBS         = 0x20
+	riscv_HWPROBE_EXT_ZBC         = 0x80
 	riscv_HWPROBE_EXT_ZVBB        = 0x20000
 	riscv_HWPROBE_EXT_ZVBC        = 0x40000
 	riscv_HWPROBE_EXT_ZVKB        = 0x80000
@@ -108,6 +109,7 @@ func doinit() {
 			RISCV64.HasZba = isSet(v, riscv_HWPROBE_EXT_ZBA)
 			RISCV64.HasZbb = isSet(v, riscv_HWPROBE_EXT_ZBB)
 			RISCV64.HasZbs = isSet(v, riscv_HWPROBE_EXT_ZBS)
+			RISCV64.HasZbc = isSet(v, riscv_HWPROBE_EXT_ZBC)
 			RISCV64.HasZvbb = isSet(v, riscv_HWPROBE_EXT_ZVBB)
 			RISCV64.HasZvbc = isSet(v, riscv_HWPROBE_EXT_ZVBC)
 			RISCV64.HasZvkb = isSet(v, riscv_HWPROBE_EXT_ZVKB)

vendor/golang.org/x/sys/cpu/cpu_loong64.go

@@ -15,8 +15,13 @@ const (
 	cpucfg1_CRC32 = 1 << 25
 
 	// CPUCFG2 bits
-	cpucfg2_LAM_BH = 1 << 27
-	cpucfg2_LAMCAS = 1 << 28
+	cpucfg2_LAM_BH      = 1 << 27
+	cpucfg2_LAMCAS      = 1 << 28
+	cpucfg2_LLACQ_SCREL = 1 << 29
+	cpucfg2_SCQ         = 1 << 30
+
+	// CPUCFG3 bits
+	cpucfg3_DBAR_HINTS = 1 << 17
 )
 
 func initOptions() {
@@ -26,6 +31,9 @@ func initOptions() {
 		{Name: "crc32", Feature: &Loong64.HasCRC32},
 		{Name: "lam_bh", Feature: &Loong64.HasLAM_BH},
 		{Name: "lamcas", Feature: &Loong64.HasLAMCAS},
+		{Name: "llacq_screl", Feature: &Loong64.HasLLACQ_SCREL},
+		{Name: "scq", Feature: &Loong64.HasSCQ},
+		{Name: "dbar_hints", Feature: &Loong64.HasDBAR_HINTS},
 	}
 
 	// The CPUCFG data on Loong64 only reflects the hardware capabilities,
@@ -37,10 +45,14 @@ func initOptions() {
 	// through CPUCFG
 	cfg1 := get_cpucfg(1)
 	cfg2 := get_cpucfg(2)
+	cfg3 := get_cpucfg(3)
 
 	Loong64.HasCRC32 = cfgIsSet(cfg1, cpucfg1_CRC32)
 	Loong64.HasLAMCAS = cfgIsSet(cfg2, cpucfg2_LAMCAS)
 	Loong64.HasLAM_BH = cfgIsSet(cfg2, cpucfg2_LAM_BH)
+	Loong64.HasLLACQ_SCREL = cfgIsSet(cfg2, cpucfg2_LLACQ_SCREL)
+	Loong64.HasSCQ = cfgIsSet(cfg2, cpucfg2_SCQ)
+	Loong64.HasDBAR_HINTS = cfgIsSet(cfg3, cpucfg3_DBAR_HINTS)
 }
 
 func get_cpucfg(reg uint32) uint32

vendor/golang.org/x/sys/cpu/cpu_riscv64.go

@@ -16,6 +16,7 @@ func initOptions() {
 		{Name: "zba", Feature: &RISCV64.HasZba},
 		{Name: "zbb", Feature: &RISCV64.HasZbb},
 		{Name: "zbs", Feature: &RISCV64.HasZbs},
+		{Name: "zbc", Feature: &RISCV64.HasZbc},
 		// RISC-V Cryptography Extensions
 		{Name: "zvbb", Feature: &RISCV64.HasZvbb},
 		{Name: "zvbc", Feature: &RISCV64.HasZvbc},

vendor/golang.org/x/sys/cpu/cpu_windows.go

@@ -0,0 +1,26 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package cpu
+
+//go:generate go run golang.org/x/sys/windows/mkwinsyscall -systemdll=false -output zcpu_windows.go cpu_windows.go
+
+//sys	isProcessorFeaturePresent(ProcessorFeature uint32) (ret bool) = kernel32.IsProcessorFeaturePresent
+
+// The processor features to be tested for IsProcessorFeaturePresent, see
+// https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-isprocessorfeaturepresent
+const (
+	_PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE  = 30
+	_PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE   = 31
+	_PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE = 34
+	_PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE     = 43
+
+	_PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE = 44
+	_PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE = 45
+	_PF_ARM_SVE_INSTRUCTIONS_AVAILABLE       = 46
+	_PF_ARM_SVE2_INSTRUCTIONS_AVAILABLE      = 47
+
+	_PF_ARM_SHA3_INSTRUCTIONS_AVAILABLE   = 64
+	_PF_ARM_SHA512_INSTRUCTIONS_AVAILABLE = 65
+)

vendor/golang.org/x/sys/cpu/cpu_windows_arm64.go

@@ -4,10 +4,6 @@
 
 package cpu
 
-import (
-	"golang.org/x/sys/windows"
-)
-
 func doinit() {
 	// set HasASIMD and HasFP to true as per
 	// https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#base-requirements
@@ -18,25 +14,25 @@ func doinit() {
 	ARM64.HasASIMD = true
 	ARM64.HasFP = true
 
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) {
+	if isProcessorFeaturePresent(_PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) {
 		ARM64.HasAES = true
 		ARM64.HasPMULL = true
 		ARM64.HasSHA1 = true
 		ARM64.HasSHA2 = true
 	}
-	ARM64.HasSHA3 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA3_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasCRC32 = windows.IsProcessorFeaturePresent(windows.PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasSHA512 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SHA512_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasATOMICS = windows.IsProcessorFeaturePresent(windows.PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE)
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE) {
+	ARM64.HasSHA3 = isProcessorFeaturePresent(_PF_ARM_SHA3_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasCRC32 = isProcessorFeaturePresent(_PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasSHA512 = isProcessorFeaturePresent(_PF_ARM_SHA512_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasATOMICS = isProcessorFeaturePresent(_PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE)
+	if isProcessorFeaturePresent(_PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE) {
 		ARM64.HasASIMDDP = true
 		ARM64.HasASIMDRDM = true
 	}
-	if windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE) {
+	if isProcessorFeaturePresent(_PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE) {
 		ARM64.HasLRCPC = true
 		ARM64.HasSM3 = true
 	}
-	ARM64.HasSVE = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasSVE2 = windows.IsProcessorFeaturePresent(windows.PF_ARM_SVE2_INSTRUCTIONS_AVAILABLE)
-	ARM64.HasJSCVT = windows.IsProcessorFeaturePresent(windows.PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasSVE = isProcessorFeaturePresent(_PF_ARM_SVE_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasSVE2 = isProcessorFeaturePresent(_PF_ARM_SVE2_INSTRUCTIONS_AVAILABLE)
+	ARM64.HasJSCVT = isProcessorFeaturePresent(_PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE)
 }

vendor/golang.org/x/sys/cpu/zcpu_windows.go

@@ -0,0 +1,48 @@
+// Code generated by 'go generate'; DO NOT EDIT.
+
+package cpu
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
+	errERROR_EINVAL     error = syscall.EINVAL
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e syscall.Errno) error {
+	switch e {
+	case 0:
+		return errERROR_EINVAL
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+	modkernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+	procIsProcessorFeaturePresent = modkernel32.NewProc("IsProcessorFeaturePresent")
+)
+
+func isProcessorFeaturePresent(ProcessorFeature uint32) (ret bool) {
+	r0, _, _ := syscall.SyscallN(procIsProcessorFeaturePresent.Addr(), uintptr(ProcessorFeature))
+	ret = r0 != 0
+	return
+}

vendor/golang.org/x/sys/unix/affinity_linux.go

@@ -13,11 +13,19 @@ import (
 
 const cpuSetSize = _CPU_SETSIZE / _NCPUBITS
 
-// CPUSet represents a CPU affinity mask.
+// CPUSet represents a bit mask of CPUs, to be used with [SchedGetaffinity], [SchedSetaffinity],
+// and [SetMemPolicy].
+//
+// Note this type can only represent CPU IDs 0 through 1023.
+// Use [CPUSetDynamic]/[NewCPUSet] instead to avoid this limit.
 type CPUSet [cpuSetSize]cpuMask
 
-func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
-	_, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(*set)), uintptr(unsafe.Pointer(set)))
+// CPUSetDynamic represents a bit mask of CPUs, to be used with [SchedGetaffinityDynamic],
+// [SchedSetaffinityDynamic], and [SetMemPolicyDynamic]. Use [NewCPUSet] to allocate.
+type CPUSetDynamic []cpuMask
+
+func schedAffinity(trap uintptr, pid int, size uintptr, ptr unsafe.Pointer) error {
+	_, _, e := RawSyscall(trap, uintptr(pid), uintptr(size), uintptr(ptr))
 	if e != 0 {
 		return errnoErr(e)
 	}
@@ -27,13 +35,13 @@ func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
 // SchedGetaffinity gets the CPU affinity mask of the thread specified by pid.
 // If pid is 0 the calling thread is used.
 func SchedGetaffinity(pid int, set *CPUSet) error {
-	return schedAffinity(SYS_SCHED_GETAFFINITY, pid, set)
+	return schedAffinity(SYS_SCHED_GETAFFINITY, pid, unsafe.Sizeof(*set), unsafe.Pointer(set))
 }
 
 // SchedSetaffinity sets the CPU affinity mask of the thread specified by pid.
 // If pid is 0 the calling thread is used.
 func SchedSetaffinity(pid int, set *CPUSet) error {
-	return schedAffinity(SYS_SCHED_SETAFFINITY, pid, set)
+	return schedAffinity(SYS_SCHED_SETAFFINITY, pid, unsafe.Sizeof(*set), unsafe.Pointer(set))
 }
 
 // Zero clears the set s, so that it contains no CPUs.
@@ -45,9 +53,7 @@ func (s *CPUSet) Zero() {
 // will silently ignore any invalid CPU bits in [CPUSet] so this is an
 // efficient way of resetting the CPU affinity of a process.
 func (s *CPUSet) Fill() {
-	for i := range s {
-		s[i] = ^cpuMask(0)
-	}
+	cpuMaskFill(s[:])
 }
 
 func cpuBitsIndex(cpu int) int {
@@ -58,24 +64,27 @@ func cpuBitsMask(cpu int) cpuMask {
 	return cpuMask(1 << (uint(cpu) % _NCPUBITS))
 }
 
-// Set adds cpu to the set s.
-func (s *CPUSet) Set(cpu int) {
+func cpuMaskFill(s []cpuMask) {
+	for i := range s {
+		s[i] = ^cpuMask(0)
+	}
+}
+
+func cpuMaskSet(s []cpuMask, cpu int) {
 	i := cpuBitsIndex(cpu)
 	if i < len(s) {
 		s[i] |= cpuBitsMask(cpu)
 	}
 }
 
-// Clear removes cpu from the set s.
-func (s *CPUSet) Clear(cpu int) {
+func cpuMaskClear(s []cpuMask, cpu int) {
 	i := cpuBitsIndex(cpu)
 	if i < len(s) {
 		s[i] &^= cpuBitsMask(cpu)
 	}
 }
 
-// IsSet reports whether cpu is in the set s.
-func (s *CPUSet) IsSet(cpu int) bool {
+func cpuMaskIsSet(s []cpuMask, cpu int) bool {
 	i := cpuBitsIndex(cpu)
 	if i < len(s) {
 		return s[i]&cpuBitsMask(cpu) != 0
@@ -83,11 +92,98 @@ func (s *CPUSet) IsSet(cpu int) bool {
 	return false
 }
 
-// Count returns the number of CPUs in the set s.
-func (s *CPUSet) Count() int {
+func cpuMaskCount(s []cpuMask) int {
 	c := 0
 	for _, b := range s {
 		c += bits.OnesCount64(uint64(b))
 	}
 	return c
 }
+
+// Set adds cpu to the set s. If cpu is out of bounds for s, no action is taken.
+func (s *CPUSet) Set(cpu int) {
+	cpuMaskSet(s[:], cpu)
+}
+
+// Clear removes cpu from the set s. If cpu is out of bounds for s, no action is taken.
+func (s *CPUSet) Clear(cpu int) {
+	cpuMaskClear(s[:], cpu)
+}
+
+// IsSet reports whether cpu is in the set s.
+func (s *CPUSet) IsSet(cpu int) bool {
+	return cpuMaskIsSet(s[:], cpu)
+}
+
+// Count returns the number of CPUs in the set s.
+func (s *CPUSet) Count() int {
+	return cpuMaskCount(s[:])
+}
+
+// NewCPUSet creates a CPU affinity mask capable of representing CPU IDs
+// up to maxCPU (exclusive).
+func NewCPUSet(maxCPU int) CPUSetDynamic {
+	numMasks := (maxCPU + _NCPUBITS - 1) / _NCPUBITS
+	if numMasks == 0 {
+		numMasks = 1
+	}
+	return make(CPUSetDynamic, numMasks)
+}
+
+// Zero clears the set s, so that it contains no CPUs.
+func (s CPUSetDynamic) Zero() {
+	clear(s)
+}
+
+// Fill adds all possible CPU bits to the set s. On Linux, [SchedSetaffinityDynamic]
+// will silently ignore any invalid CPU bits in [CPUSetDynamic] so this is an
+// efficient way of resetting the CPU affinity of a process.
+func (s CPUSetDynamic) Fill() {
+	cpuMaskFill(s)
+}
+
+// Set adds cpu to the set s. If cpu is out of bounds for s, no action is taken.
+func (s CPUSetDynamic) Set(cpu int) {
+	cpuMaskSet(s, cpu)
+}
+
+// Clear removes cpu from the set s. If cpu is out of bounds for s, no action is taken.
+func (s CPUSetDynamic) Clear(cpu int) {
+	cpuMaskClear(s, cpu)
+}
+
+// IsSet reports whether cpu is in the set s.
+func (s CPUSetDynamic) IsSet(cpu int) bool {
+	return cpuMaskIsSet(s, cpu)
+}
+
+// Count returns the number of CPUs in the set s.
+func (s CPUSetDynamic) Count() int {
+	return cpuMaskCount(s)
+}
+
+func (s CPUSetDynamic) size() uintptr {
+	return uintptr(len(s)) * unsafe.Sizeof(cpuMask(0))
+}
+
+func (s CPUSetDynamic) pointer() unsafe.Pointer {
+	if len(s) == 0 {
+		return nil
+	}
+	return unsafe.Pointer(&s[0])
+}
+
+// SchedGetaffinityDynamic gets the CPU affinity mask of the thread specified by pid.
+// If pid is 0 the calling thread is used.
+//
+// If the set is smaller than the size of the affinity mask used by the kernel,
+// [EINVAL] is returned.
+func SchedGetaffinityDynamic(pid int, set CPUSetDynamic) error {
+	return schedAffinity(SYS_SCHED_GETAFFINITY, pid, set.size(), set.pointer())
+}
+
+// SchedSetaffinityDynamic sets the CPU affinity mask of the thread specified by pid.
+// If pid is 0 the calling thread is used.
+func SchedSetaffinityDynamic(pid int, set CPUSetDynamic) error {
+	return schedAffinity(SYS_SCHED_SETAFFINITY, pid, set.size(), set.pointer())
+}

vendor/golang.org/x/sys/unix/mkall.sh

@@ -51,7 +51,7 @@ if [[ "$GOOS" = "linux" ]]; then
 	# Files generated through docker (use $cmd so you can Ctl-C the build or run)
 	set -e
 	$cmd docker build --tag generate:$GOOS $GOOS
-	$cmd docker run --interactive --tty --volume $(cd -- "$(dirname -- "$0")/.." && pwd):/build generate:$GOOS
+	$cmd docker run --rm --interactive --tty --volume $(cd -- "$(dirname -- "$0")/.." && pwd):/build generate:$GOOS
 	exit
 fi
 

vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -354,6 +354,9 @@ struct ltchars {
 // Renamed in v6.16, commit c6d732c38f93 ("net: ethtool: remove duplicate defines for family info")
 #define ETHTOOL_FAMILY_NAME	ETHTOOL_GENL_NAME
 #define ETHTOOL_FAMILY_VERSION	ETHTOOL_GENL_VERSION
+
+// Removed in v6.17, commit 760e6f7befba ("futex: Remove support for IMMUTABLE")
+#define PR_FUTEX_HASH_GET_IMMUTABLE 3
 '
 
 includes_NetBSD='

vendor/golang.org/x/sys/unix/readv_unix.go

@@ -0,0 +1,103 @@
+// Copyright 2026 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build darwin || linux || openbsd
+
+package unix
+
+import "unsafe"
+
+// minIovec is the size of the small initial allocation used by
+// Readv, Writev, etc.
+//
+// This small allocation gets stack allocated, which lets the
+// common use case of len(iovs) <= minIovec avoid more expensive
+// heap allocations.
+const minIovec = 8
+
+// appendBytes converts bs to Iovecs and appends them to vecs.
+func appendBytes(vecs []Iovec, bs [][]byte) []Iovec {
+	for _, b := range bs {
+		var v Iovec
+		v.SetLen(len(b))
+		if len(b) > 0 {
+			v.Base = &b[0]
+		} else {
+			v.Base = (*byte)(unsafe.Pointer(&_zero))
+		}
+		vecs = append(vecs, v)
+	}
+	return vecs
+}
+
+// writevRaceDetect tells the race detector that the program
+// has read the first n bytes stored in iovecs.
+func writevRaceDetect(iovecs []Iovec, n int) {
+	if !raceenabled {
+		return
+	}
+	for i := 0; n > 0 && i < len(iovecs); i++ {
+		m := min(int(iovecs[i].Len), n)
+		n -= m
+		if m > 0 {
+			raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
+		}
+	}
+}
+
+// readvRaceDetect tells the race detector that the program
+// has written to the first n bytes stored in iovecs.
+func readvRaceDetect(iovecs []Iovec, n int, err error) {
+	if !raceenabled {
+		return
+	}
+	for i := 0; n > 0 && i < len(iovecs); i++ {
+		m := min(int(iovecs[i].Len), n)
+		n -= m
+		if m > 0 {
+			raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
+		}
+	}
+	if err == nil {
+		raceAcquire(unsafe.Pointer(&ioSync))
+	}
+}
+
+func Readv(fd int, iovs [][]byte) (n int, err error) {
+	iovecs := make([]Iovec, 0, minIovec)
+	iovecs = appendBytes(iovecs, iovs)
+	n, err = readv(fd, iovecs)
+	readvRaceDetect(iovecs, n, err)
+	return n, err
+}
+
+func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
+	iovecs := make([]Iovec, 0, minIovec)
+	iovecs = appendBytes(iovecs, iovs)
+	n, err = preadv(fd, iovecs, offset)
+	readvRaceDetect(iovecs, n, err)
+	return n, err
+}
+
+func Writev(fd int, iovs [][]byte) (n int, err error) {
+	iovecs := make([]Iovec, 0, minIovec)
+	iovecs = appendBytes(iovecs, iovs)
+	if raceenabled {
+		raceReleaseMerge(unsafe.Pointer(&ioSync))
+	}
+	n, err = writev(fd, iovecs)
+	writevRaceDetect(iovecs, n)
+	return n, err
+}
+
+func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
+	iovecs := make([]Iovec, 0, minIovec)
+	iovecs = appendBytes(iovecs, iovs)
+	if raceenabled {
+		raceReleaseMerge(unsafe.Pointer(&ioSync))
+	}
+	n, err = pwritev(fd, iovecs, offset)
+	writevRaceDetect(iovecs, n)
+	return n, err
+}

vendor/golang.org/x/sys/unix/syscall_darwin.go

@@ -602,95 +602,6 @@ func Connectx(fd int, srcIf uint32, srcAddr, dstAddr Sockaddr, associd SaeAssocI
 	return
 }
 
-const minIovec = 8
-
-func Readv(fd int, iovs [][]byte) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	n, err = readv(fd, iovecs)
-	readvRacedetect(iovecs, n, err)
-	return n, err
-}
-
-func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	n, err = preadv(fd, iovecs, offset)
-	readvRacedetect(iovecs, n, err)
-	return n, err
-}
-
-func Writev(fd int, iovs [][]byte) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	if raceenabled {
-		raceReleaseMerge(unsafe.Pointer(&ioSync))
-	}
-	n, err = writev(fd, iovecs)
-	writevRacedetect(iovecs, n)
-	return n, err
-}
-
-func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	if raceenabled {
-		raceReleaseMerge(unsafe.Pointer(&ioSync))
-	}
-	n, err = pwritev(fd, iovecs, offset)
-	writevRacedetect(iovecs, n)
-	return n, err
-}
-
-func appendBytes(vecs []Iovec, bs [][]byte) []Iovec {
-	for _, b := range bs {
-		var v Iovec
-		v.SetLen(len(b))
-		if len(b) > 0 {
-			v.Base = &b[0]
-		} else {
-			v.Base = (*byte)(unsafe.Pointer(&_zero))
-		}
-		vecs = append(vecs, v)
-	}
-	return vecs
-}
-
-func writevRacedetect(iovecs []Iovec, n int) {
-	if !raceenabled {
-		return
-	}
-	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := int(iovecs[i].Len)
-		if m > n {
-			m = n
-		}
-		n -= m
-		if m > 0 {
-			raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
-		}
-	}
-}
-
-func readvRacedetect(iovecs []Iovec, n int, err error) {
-	if !raceenabled {
-		return
-	}
-	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := int(iovecs[i].Len)
-		if m > n {
-			m = n
-		}
-		n -= m
-		if m > 0 {
-			raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
-		}
-	}
-	if err == nil {
-		raceAcquire(unsafe.Pointer(&ioSync))
-	}
-}
-
 //sys	connectx(fd int, endpoints *SaEndpoints, associd SaeAssocID, flags uint32, iov []Iovec, n *uintptr, connid *SaeConnID) (err error)
 //sys	sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error)
 

vendor/golang.org/x/sys/unix/syscall_linux.go

@@ -2150,33 +2150,10 @@ func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
 //sys	exitThread(code int) (err error) = SYS_EXIT
 //sys	readv(fd int, iovs []Iovec) (n int, err error) = SYS_READV
 //sys	writev(fd int, iovs []Iovec) (n int, err error) = SYS_WRITEV
-//sys	preadv(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PREADV
-//sys	pwritev(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PWRITEV
-//sys	preadv2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PREADV2
-//sys	pwritev2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PWRITEV2
-
-// minIovec is the size of the small initial allocation used by
-// Readv, Writev, etc.
-//
-// This small allocation gets stack allocated, which lets the
-// common use case of len(iovs) <= minIovs avoid more expensive
-// heap allocations.
-const minIovec = 8
-
-// appendBytes converts bs to Iovecs and appends them to vecs.
-func appendBytes(vecs []Iovec, bs [][]byte) []Iovec {
-	for _, b := range bs {
-		var v Iovec
-		v.SetLen(len(b))
-		if len(b) > 0 {
-			v.Base = &b[0]
-		} else {
-			v.Base = (*byte)(unsafe.Pointer(&_zero))
-		}
-		vecs = append(vecs, v)
-	}
-	return vecs
-}
+//sys	preadvSyscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PREADV
+//sys	pwritevSyscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PWRITEV
+//sys	preadv2Syscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PREADV2
+//sys	pwritev2Syscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PWRITEV2
 
 // offs2lohi splits offs into its low and high order bits.
 func offs2lohi(offs int64) (lo, hi uintptr) {
@@ -2184,69 +2161,23 @@ func offs2lohi(offs int64) (lo, hi uintptr) {
 	return uintptr(offs), uintptr(uint64(offs) >> (longBits - 1) >> 1) // two shifts to avoid false positive in vet
 }
 
-func Readv(fd int, iovs [][]byte) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	n, err = readv(fd, iovecs)
-	readvRacedetect(iovecs, n, err)
-	return n, err
-}
-
-func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
+func preadv(fd int, iovecs []Iovec, offset int64) (n int, err error) {
 	lo, hi := offs2lohi(offset)
-	n, err = preadv(fd, iovecs, lo, hi)
-	readvRacedetect(iovecs, n, err)
-	return n, err
+	return preadvSyscall(fd, iovecs, lo, hi)
 }
 
 func Preadv2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
 	iovecs := make([]Iovec, 0, minIovec)
 	iovecs = appendBytes(iovecs, iovs)
 	lo, hi := offs2lohi(offset)
-	n, err = preadv2(fd, iovecs, lo, hi, flags)
-	readvRacedetect(iovecs, n, err)
+	n, err = preadv2Syscall(fd, iovecs, lo, hi, flags)
+	readvRaceDetect(iovecs, n, err)
 	return n, err
 }
 
-func readvRacedetect(iovecs []Iovec, n int, err error) {
-	if !raceenabled {
-		return
-	}
-	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := min(int(iovecs[i].Len), n)
-		n -= m
-		if m > 0 {
-			raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
-		}
-	}
-	if err == nil {
-		raceAcquire(unsafe.Pointer(&ioSync))
-	}
-}
-
-func Writev(fd int, iovs [][]byte) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	if raceenabled {
-		raceReleaseMerge(unsafe.Pointer(&ioSync))
-	}
-	n, err = writev(fd, iovecs)
-	writevRacedetect(iovecs, n)
-	return n, err
-}
-
-func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
-	iovecs := make([]Iovec, 0, minIovec)
-	iovecs = appendBytes(iovecs, iovs)
-	if raceenabled {
-		raceReleaseMerge(unsafe.Pointer(&ioSync))
-	}
+func pwritev(fd int, iovecs []Iovec, offset int64) (n int, err error) {
 	lo, hi := offs2lohi(offset)
-	n, err = pwritev(fd, iovecs, lo, hi)
-	writevRacedetect(iovecs, n)
-	return n, err
+	return pwritevSyscall(fd, iovecs, lo, hi)
 }
 
 func Pwritev2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
@@ -2256,24 +2187,11 @@ func Pwritev2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error)
 		raceReleaseMerge(unsafe.Pointer(&ioSync))
 	}
 	lo, hi := offs2lohi(offset)
-	n, err = pwritev2(fd, iovecs, lo, hi, flags)
-	writevRacedetect(iovecs, n)
+	n, err = pwritev2Syscall(fd, iovecs, lo, hi, flags)
+	writevRaceDetect(iovecs, n)
 	return n, err
 }
 
-func writevRacedetect(iovecs []Iovec, n int) {
-	if !raceenabled {
-		return
-	}
-	for i := 0; n > 0 && i < len(iovecs); i++ {
-		m := min(int(iovecs[i].Len), n)
-		n -= m
-		if m > 0 {
-			raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
-		}
-	}
-}
-
 // mmap varies by architecture; see syscall_linux_*.go.
 //sys	munmap(addr uintptr, length uintptr) (err error)
 //sys	mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (xaddr uintptr, err error)
@@ -2644,8 +2562,12 @@ func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) {
 //sys	Cachestat(fd uint, crange *CachestatRange, cstat *Cachestat_t, flags uint) (err error)
 //sys	Mseal(b []byte, flags uint) (err error)
 
-//sys	setMemPolicy(mode int, mask *CPUSet, size int) (err error) = SYS_SET_MEMPOLICY
+//sys	setMemPolicy(mode int, mask unsafe.Pointer, size uintptr) (err error) = SYS_SET_MEMPOLICY
 
 func SetMemPolicy(mode int, mask *CPUSet) error {
-	return setMemPolicy(mode, mask, _CPU_SETSIZE)
+	return setMemPolicy(mode, unsafe.Pointer(mask), _CPU_SETSIZE)
+}
+
+func SetMemPolicyDynamic(mode int, mask CPUSetDynamic) error {
+	return setMemPolicy(mode, mask.pointer(), mask.size())
 }

vendor/golang.org/x/sys/unix/syscall_linux_arm.go

@@ -82,6 +82,9 @@ func Time(t *Time_t) (Time_t, error) {
 }
 
 func Utime(path string, buf *Utimbuf) error {
+	if buf == nil {
+		return Utimes(path, nil)
+	}
 	tv := []Timeval{
 		{Sec: buf.Actime},
 		{Sec: buf.Modtime},

vendor/golang.org/x/sys/unix/syscall_linux_arm64.go

@@ -113,6 +113,9 @@ func Time(t *Time_t) (Time_t, error) {
 }
 
 func Utime(path string, buf *Utimbuf) error {
+	if buf == nil {
+		return Utimes(path, nil)
+	}
 	tv := []Timeval{
 		{Sec: buf.Actime},
 		{Sec: buf.Modtime},

vendor/golang.org/x/sys/unix/syscall_linux_loong64.go

@@ -150,6 +150,9 @@ func Time(t *Time_t) (Time_t, error) {
 }
 
 func Utime(path string, buf *Utimbuf) error {
+	if buf == nil {
+		return Utimes(path, nil)
+	}
 	tv := []Timeval{
 		{Sec: buf.Actime},
 		{Sec: buf.Modtime},

vendor/golang.org/x/sys/unix/syscall_linux_riscv64.go

@@ -112,6 +112,9 @@ func Time(t *Time_t) (Time_t, error) {
 }
 
 func Utime(path string, buf *Utimbuf) error {
+	if buf == nil {
+		return Utimes(path, nil)
+	}
 	tv := []Timeval{
 		{Sec: buf.Actime},
 		{Sec: buf.Modtime},

vendor/golang.org/x/sys/unix/syscall_openbsd.go

@@ -300,6 +300,10 @@ func Uname(uname *Utsname) error {
 //sys	Pathconf(path string, name int) (val int, err error)
 //sys	pread(fd int, p []byte, offset int64) (n int, err error)
 //sys	pwrite(fd int, p []byte, offset int64) (n int, err error)
+//sys	readv(fd int, iovecs []Iovec) (n int, err error)
+//sys	writev(fd int, iovecs []Iovec) (n int, err error)
+//sys	preadv(fd int, iovecs []Iovec, offset int64) (n int, err error)
+//sys	pwritev(fd int, iovecs []Iovec, offset int64) (n int, err error)
 //sys	read(fd int, p []byte) (n int, err error)
 //sys	Readlink(path string, buf []byte) (n int, err error)
 //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)