git – Update theme from github whenever there is a push

We have a proprietary theme that is hosted on a private git repo. There are a bunch of people working on the theme and we used a plugin called Github updater to update theme files on the server whenever we pushed to the master branch.

This worked flawlessly for a while. But the plugin is now discontinued by its creator. I’m looking for a preferably free replacement for this plugin. I’ve searched on the internet but couldn’t find a reliable solution that is not too difficult to use, please help!