For release build full git checkout is required

Author: penguinolog

.github/workflows/pythonpackage.yml

@@ -127,6 +127,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0  # need for setuptools_scm
       - name: Set up Python
         uses: actions/setup-python@v4
         with: