How to handle new changes on a repository? [question]

I want to track new commits, issues, pull requests, etc of some (at least mine) github repository.
So is there a decorator like `@repo.on_new_commit()` or `@repo.on_new_issue()` or is there some other way to handle these updates in an easy fashion? I tried finding something in documentation but couldn't. 

**Please let me know how.**