Read Testing Config Fix (#78)

* config-comment-test.yml: Ended if block

* config-comment-test.yml: don't checkout the pr as later steps require the main branch

.github/workflows/config-comment-test.yml

@@ -72,11 +72,10 @@ jobs:
 
       - name: Get base branch for PR
         id: base
+        # Get the base branch name from the PR
         env:
           GH_TOKEN: ${{ github.token }}
-        run: |
-          gh pr checkout ${{ github.event.issue.number }}
-          echo "branch=$(gh pr view --json baseRefName --jq '.baseRefName')"
+        run: echo "branch=$(gh pr view ${{ github.event.issue.number }} --json baseRefName --jq '.baseRefName')" >> $GITHUB_OUTPUT
 
       - name: Read reproducibility tests config
         id: repro-config
@@ -127,6 +126,7 @@ jobs:
             echo "::error::Usage: ${{ env.USAGE }}"
             echo "::error::Command must start with !test to invoke model-config-tests' config-comment-test.yml."
             exit 1
+          fi
 
       - name: Get !test type
         id: test