Move commit related functions to gitrepo package (#35600)

modules/gitrepo/cat_file.go

@@ -0,0 +1,14 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package gitrepo
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/modules/git"
+)
+
+func NewBatch(ctx context.Context, repo Repository) (*git.Batch, error) {
+	return git.NewBatch(ctx, repoPath(repo))
+}