add fetch-depth to gh workflow: v2

.github/workflows/python-build.yml

@@ -18,6 +18,12 @@ jobs:
         with:
           fetch-depth: 0 # this is needed to get the tags
 
+      - name: Install setuptools_scm and update seuptools
+        run: pip install setuptools_scm setuptools; pip install --upgrade setuptools
+
+      - name: Get package version from setuptools_scm
+        run: python -m setuptools_scm
+
       - name: Build wheels
         uses: pypa/[email protected]