Merge pull request scipy#14146 from tupui/commit_count

MAINT: commit count if no tag

Author: rgommers

setup.py

@@ -93,6 +93,7 @@ def _minimal_ext_cmd(cmd):
         out = _minimal_ext_cmd(['git', 'rev-list', 'HEAD', prev_version_tag,
                                 '--count'])
         COMMIT_COUNT = out.strip().decode('ascii')
+        COMMIT_COUNT = '0' if not COMMIT_COUNT else COMMIT_COUNT
     except OSError:
         GIT_REVISION = "Unknown"
         COMMIT_COUNT = "Unknown"