diff --git a/.gitea/workflows/render-manifests-automerge.yaml b/.gitea/workflows/render-manifests-automerge.yaml
index 98571e612..50d1c0d1b 100644
--- a/.gitea/workflows/render-manifests-automerge.yaml
+++ b/.gitea/workflows/render-manifests-automerge.yaml
@@ -64,8 +64,8 @@ jobs:
 
           RENDER_DIR=()
 
-          echo ">> Checking for changes from ${{ gitea.event.before }}..${{ gitea.event.after }} ..."
-          GIT_DIFF=$(git diff --name-only ${{ gitea.event.before }}..${{ gitea.event.after }} | xargs -I {} dirname {} | sort -u | grep "clusters/cl01tl/helm/")
+          echo ">> Checking for changes from HEAD^..HEAD ..."
+          GIT_DIFF=$(git diff --name-only HEAD^..HEAD | xargs -I {} dirname {} | sort -u | grep "clusters/cl01tl/helm/")
 
           if [ -n "${GIT_DIFF}" ]; then
             echo ">> Changes detected:"