更新 Checkout 步骤，添加 GitHub 服务器 URL 配置，使用 Gitea 服务器

Co-authored-by: Copilot <copilot@github.com>

.gitea/workflows/package.yml

@@ -14,6 +14,10 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          repository: ${{ github.repository }}
+          ref: ${{ github.ref }}
+          github-server-url: ${{ github.server_url }}
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3