Update javascript-packages.yaml

.github/workflows/javascript-packages.yaml

@@ -11,7 +11,10 @@ jobs:
     steps:
         - name: Checkout repo
           uses: actions/checkout@v2
-
+          with:
+          # Make sure the actual branch is checked out when running on pull requests
+            ref: ${{ github.h
+            
         - name: Install dependencies
           run: |
             cd build/javascript