feat: cancel git clone ops gracefully

See #528

pkg/git/clone.go

@@ -59,7 +59,7 @@ func Clone(dir, url string) error {
 			}
 
 			if err := ctx.Err(); err != nil {
-				errCh <- err
+				errCh <- fmt.Errorf("git clone %s: cancelled due to interrupt", dir)
 			}
 
 			if err != nil {