Fetch with reference, to checkout branch instead of HEAD.

Signed-off-by: Jelmer de Wolde <jelmer.de.wolde@alliander.com>

Author: Jelmerdw

.github/workflows/pr.yml

@@ -137,6 +137,7 @@ jobs:
       - uses: actions/checkout@v6
         with:
           fetch-depth: 0
+          ref: ${{ env.BRANCH_NAME }}
       - name: Set up python3
         uses: actions/setup-python@v6
         with: