Current definition of get_commits() in helper.py is fairly GitHub specific. SHA should be changed to commit_id (which is "commit: sha" in [GitHub](https://developer.github.com/v3/repos/commits/) and "values: id" in [bitbucket](https://developer.atlassian.com/static/rest/bitbucket-server/4.14.0/bitbucket-rest.html#idm45183780549376) )
Current definition of get_commits() in helper.py is fairly GitHub specific.
SHA should be changed to commit_id (which is "commit: sha" in GitHub and "values: id" in bitbucket )