diff --git a/.github/workflows/actions/build-core/action.yml b/.github/workflows/actions/build-core/action.yml
index 4d711dd0c7..6b7647160b 100644
--- a/.github/workflows/actions/build-core/action.yml
+++ b/.github/workflows/actions/build-core/action.yml
@@ -4,6 +4,9 @@ runs:
   using: 'composite'
   steps:
     - uses: actions/checkout@v2
+      with:
+        # Checkout the latest commit in this branch
+        ref: ${{ github.event.pull_request.head.sha }}
     - uses: actions/setup-node@v1
       with:
         node-version: 15.x
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e20d6c76d1..d8894de7a8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,6 +9,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        - uses: actions/checkout@v2
+          with:
+            # Checkout the latest commit in this branch
+            ref: ${{ github.event.pull_request.head.sha }}
       - uses: ./.github/workflows/actions/build-core
 
   test-core-clean-build: