Use --message=%s for git commit message (#23028) (#23029)

Backport #23028

This backport is done by manually because the git module is different.

modules/git/commit.go

@@ -132,7 +132,7 @@ func CommitChangesWithArgs(repoPath string, args []CmdArg, opts CommitChangesOpt
 	if opts.Author != nil {
 		cmd.AddArguments(CmdArg(fmt.Sprintf("--author='%s <%s>'", opts.Author.Name, opts.Author.Email)))
 	}
-	cmd.AddArguments("-m").AddDynamicArguments(opts.Message)
+	cmd.AddArguments(CmdArg("--message=" + opts.Message))
 
 	_, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
 	// No stderr but exit status 1 means nothing to commit.

modules/repository/init.go

@@ -319,7 +319,7 @@ func initRepoCommit(ctx context.Context, tmpPath string, repo *repo_model.Reposi
 
 	cmd := git.NewCommand(ctx,
 		"commit", git.CmdArg(fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email)),
-		"-m", "Initial commit",
+		"--message=Initial commit",
 	)
 
 	sign, keyID, signer, _ := asymkey_service.SignInitialCommit(ctx, tmpPath, u)