diff --git a/.github/workflows/testmerge.yml b/.github/workflows/testmerge.yml
index 6de79c4d214..a2e722e77e6 100644
--- a/.github/workflows/testmerge.yml
+++ b/.github/workflows/testmerge.yml
@@ -72,7 +72,7 @@ jobs:
             PR_TITLE=$(echo "$PR_DETAIL" | jq -r '.title')
             echo "Preparing $PR_TITLE (#$PR_NUMBER)"
 
-            git fetch origin pull/$PR_NUMBER/head:pr-$PR_number
+            git fetch origin pull/$PR_NUMBER/head:pr-$PR_NUMBER
 
             # Check for merge conflicts
             git merge --no-commit --no-ff pr-$PR_NUMBER || true