Anyone uses github-updater to update sage 9?

Hi everybody!

I’m looking for a way to update my theme from my git repo.
I found this plugin which seems to do it: GitHub - afragen/git-updater: This WP plugin will update GitHub, Bitbucket, GitLab, and Gitea hosted plugins and themes
but, it requires style.css to be in the root of the theme directory.

anyone tried this?
or how would you update from your repo?