Refactor CI for forked repositories - Fix

Author: yoanm

.github/actions/reports-group/attach-check-run-to-triggering-workflow-action/dist/index.js

@@ -63,10 +63,9 @@ export const getBranch = () => {
     }
 
     // In case ref is not a branch (e.g. a tag), fallback to repository default branch
-    return ghaEvent.ref.startsWith('refs/heads') ? ghaEvent.ref.replace('refs/heads/', '') : ghaEvent.repository.default_branch;
+    return ghaContext.ref.startsWith('refs/heads') ? ghaContext.ref.replace('refs/heads/', '') : ghaEvent.repository.default_branch;
 };
 
-
 /**
  * @return {boolean}
  */