The GitHub token needs to be in the environment.

Author: kevinbackhouse

.github/workflows/smoketest.yaml

@@ -38,6 +38,7 @@ jobs:
       - name: Checkout the PR
         env:
           PR_NUMBER: ${{ github.event.issue.number }}
+          GITHUB_TOKEN: ${{ github.token }}
         run: |
           gh pr checkout $PR_NUMBER