diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index dafcee1..9a1988f 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
         run: |
           git init .
           git remote add origin https://git.tkmind.cn/tkmind/memind.git
-          git fetch --depth=1 origin "${{ gitea.sha }}"
+          git fetch --depth=2 origin "${{ gitea.sha }}"
           git checkout --detach FETCH_HEAD
           test "$(git rev-parse HEAD)" = "${{ gitea.sha }}"