fix workflow

Author: nggit

.github/workflows/push_to_registry.yaml

@@ -32,6 +32,8 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
 
       - name: List modified files
         run: echo "FILES_MODIFIED=\"$( git diff --name-only HEAD HEAD^ )\"" >> $GITHUB_ENV