checkout manually

.gitea/workflows/build-image.yml

@@ -14,11 +14,12 @@ jobs:
   build:
     runs-on: cth-ubuntu-latest
     steps:
-      - name: Check out repository
-        uses: https://github.com/actions/checkout@v4
-
       - name: Fetch lfs
         run: |
+          git init
+          git remote add origin gitea@example.com:org/repo.git
+          git fetch --depth 1 origin ${{ gitea.ref }}
+          git checkout FETCH_HEAD
           git lfs pull
 
       - name: update packages