diff --git a/.gitea/workflows/render-manifests-merge.yaml b/.gitea/workflows/render-manifests-merge.yaml
index 04cd94a9d..8e253a973 100644
--- a/.gitea/workflows/render-manifests-merge.yaml
+++ b/.gitea/workflows/render-manifests-merge.yaml
@@ -69,8 +69,8 @@ jobs:
 
           RENDER_DIR=()
 
-          echo ">> Checking for changes ..."
-          GIT_DIFF=$(git diff --name-only ${{ gitea.event.before }}..HEAD | xargs -I {} dirname {} | sort -u | grep "clusters/cl01tl/helm/")
+          echo ">> Checking for changes from HEAD^..HEAD ..."
+          GIT_DIFF=$(git diff --name-only HEAD^..HEAD | xargs -I {} dirname {} | sort -u | grep "clusters/cl01tl/helm/")
 
           if [ -n "${GIT_DIFF}" ]; then
             echo ">> Changes detected:"