fix(vcs): allow cli to be run from subdirectory

semantic_release/vcs_helpers.py

@@ -1,6 +1,8 @@
 """VCS Helpers
 """
+import os
 import re
+from pathlib import PurePath
 from typing import Optional, Tuple
 
 import ndebug
@@ -112,7 +114,12 @@ def commit_new_version(version: str):
     check_repo()
     commit_message = config.get('semantic_release', 'commit_message')
     message = '{0}\n\n{1}'.format(version, commit_message)
-    repo.git.add(config.get('semantic_release', 'version_variable').split(':')[0])
+
+    version_file = config.get('semantic_release', 'version_variable').split(':')[0]
+    # get actual path to filename, to allow running cmd from subdir of git root
+    version_filepath = PurePath(os.getcwd(), version_file).relative_to(repo.working_dir)
+
+    repo.git.add(str(version_filepath))
     return repo.git.commit(m=message, author="semantic-release <semantic-release>")