diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 192c596..3f79aa4 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -12,7 +12,10 @@ jobs:
       - name: 检出代码
         run: |
           REF="${{ github.event.pull_request.head.ref || github.ref_name }}"
-          git clone --depth 1 --branch "$REF" "${{ github.server_url }}/${{ github.repository }}.git" .
+          git clone --depth 1 "${{ github.server_url }}/${{ github.repository }}.git" .
+          # PR head 可能是完整 ref(AGit 建的 PR 为 refs/pull/N/head),clone --branch 只认分支名,改 fetch 后 checkout
+          git fetch --depth 1 origin "$REF"
+          git checkout --detach FETCH_HEAD
       - name: 安装 uv
         run: curl -LsSf https://astral.sh/uv/install.sh | sh
       - name: 安装依赖