diff --git a/.github/workflows/e2e_test_for_prs.yml b/.github/workflows/e2e_test_for_prs.yml
index a6928b9b..d71826e0 100644
--- a/.github/workflows/e2e_test_for_prs.yml
+++ b/.github/workflows/e2e_test_for_prs.yml
@@ -14,8 +14,8 @@ jobs:
       - name: Get changed files
         id: testing-behavior
         run: |
-          git fetch origin {{ GITHUB_BASE_REF }}
-          diff=$(git diff --name-only --diff-filter=AM origin/{{ GITHUB_BASE_REF }}..HEAD)
+          git fetch origin $GITHUB_BASE_REF
+          diff=$(git diff --name-only --diff-filter=AM origin/$GITHUB_BASE_REF$..HEAD)
           echo $diff
           echo "ADDED_MODIFIED=$diff" >> "$GITHUB_OUTPUT"
           for changed_file in $diff; do