try to fix CI by making it deal with tags forcefully.

Question is why this is a problem in the first place.

.github/workflows/pythonpackage.yml

@@ -32,7 +32,7 @@ jobs:
         python -m pip install --upgrade pip setuptools wheel
         python --version; git --version
         git submodule update --init --recursive
-        git fetch --tags
+        git fetch --tags --force
 
         pip install -r requirements.txt
         pip install -r test-requirements.txt