Ensure we have the proper sha reference

.github/workflows/zz-test-worker-poc.yaml

@@ -7,8 +7,12 @@ on:
         description: 'JSON string defining the dynamic matrices for all jobs'
         required: true
         type: string
-      ref:
-        description: 'Commit SHA to check out. Use PR head SHA to report as PR check.'
+      checkout_ref:
+        description: 'Commit SHA to check out. This is the commit where the repo will be checked out.'
+        required: true
+        type: string
+      source_sha:
+        description: 'Source SHA to use for the check run'
         required: true
         type: string
       name:
@@ -41,7 +45,7 @@ jobs:
               owner: context.repo.owner,
               repo: context.repo.repo,
               name: 'Test Worker POC - ${{ inputs.name }}',
-              head_sha: '${{ inputs.ref }}',
+              head_sha: '${{ inputs.source_sha }}',
               status: 'in_progress',
               details_url: '${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}',
               output: {
@@ -61,7 +65,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
         with:
-          ref: ${{ inputs.ref }}
+          ref: ${{ inputs.checkout_ref }}
 
       - name: Set up Python
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065
@@ -95,7 +99,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
         with:
-          ref: ${{ inputs.ref }}
+          ref: ${{ inputs.checkout_ref }}
 
       - name: Run Generic Task
         run: |