diff --git a/.forgejo/workflows/prefligit-checks.yml b/.forgejo/workflows/prefligit-checks.yml
index fc16a5ca..84bbac1f 100644
--- a/.forgejo/workflows/prefligit-checks.yml
+++ b/.forgejo/workflows/prefligit-checks.yml
@@ -15,6 +15,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         persist-credentials: false
+        depth: 0 # we need to be able to get diffs
     - uses: ./.forgejo/actions/prefligit
       with:
         extra_args: --from-ref ${{ env.FROM_REF }} --to-ref ${{ env.TO_REF }} --hook-stage manual