fix: github actions was checking out the wrong ref

Author: lquixada

.github/workflows/checks.yml

@@ -13,6 +13,8 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
     steps:
     - uses: actions/checkout@v3
+      with:
+        ref: ${{ github.sha }}
     - uses: actions/cache@v3
       with:
         path: ~/.npm # this is cache where npm installs from before going out to the network

.github/workflows/pr.yml

@@ -28,7 +28,11 @@ jobs:
     name: Install
     runs-on: ubuntu-latest
     steps:
+    - name: Blah
+      run: echo blah
     - uses: actions/checkout@v3
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
     - name: Cache node_modules
       id: cacheModules
       uses: actions/cache@v3