diff --git a/.github/workflows/scheduled_e2e_test.yaml b/.github/workflows/scheduled_e2e_test.yaml
index d3db6b139..508ead224 100644
--- a/.github/workflows/scheduled_e2e_test.yaml
+++ b/.github/workflows/scheduled_e2e_test.yaml
@@ -250,7 +250,7 @@ jobs:
           REF_SHA=$(gh api \
             -H "Accept: application/vnd.github+json" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
-            /repos/${{ secrets.E2E_TESTING_REPO }}/git/ref/heads/$GITHUB_HEAD_REF \
+            /repos/${{ secrets.E2E_TESTING_REPO }}/git/ref/heads/$GITHUB_REF_NAME \
             --jq .object.sha)
 
           # Create a temporary reference/branch