fixing checkout by trigger

.github/workflows/test-CI.yml

@@ -34,16 +34,35 @@ jobs:
       # Check out the branch from the pull request, whether it's from a fork or not
       - name: Checkout the pull request's branch
         run: |
-          if [ "${{ github.event.pull_request.head.repo.full_name }}" != "${{ github.repository }}" ]; then
-            echo "PR from a fork detected. Checking out the fork's branch."
-            git remote add fork https://github.com/${{ github.event.pull_request.head.repo.full_name }}.git
-            git fetch fork ${{ github.event.pull_request.head.ref }}
-            git checkout -B ci-testing-branch FETCH_HEAD
+          set -ex
+          # debug
+          echo "==== before"
+          git status
+          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
+            if [ "${{ github.event.pull_request.head.repo.full_name }}" != "${{ github.repository }}" ]; then
+              echo "PR from a fork detected. Checking out the fork's branch."
+              git remote add fork https://github.com/${{ github.event.pull_request.head.repo.full_name }}.git
+              git fetch fork ${{ github.event.pull_request.head.ref }}
+              git checkout -B ci-testing-branch FETCH_HEAD
+            else
+              echo "PR from the same repository detected. Checking out the branch."
+              git fetch origin ${{ github.event.pull_request.head.ref }}
+              git checkout ${{ github.event.pull_request.head.ref }}
+            fi
+          elif [[ "${{ github.event_name }}" == 'workflow_dispatch' ]]; then
+            # we belive that `actions/checkout` will checkout to the branch that you chose in the `dispatch` tab
+            # so we do nothing
+            echo "we're in the right branch. no need to checkout (dispatch)"
+          elif [[ "${{ github.event_name }}" == 'push' ]]; then
+            # we belive that `actions/checkout` will checkout to the branch that we push into (i.e. either `dev` or `main`)
+            echo "we're in the right branch. no need to checkout (push)"
           else
-            echo "PR from the same repository detected. Checking out the branch."
-            git fetch origin ${{ github.event.pull_request.head.ref }}
-            git checkout ${{ github.event.pull_request.head.ref }}
+            echo "we're not it push/pull/dispatch. error."
+            exit 1
           fi
+          # debug
+          echo "==== after"
+          git status
 
       - name: Set up Python
         uses: actions/setup-python@v5