Function edit_repo

edit the plugins repo branch, version and priority. Args: repo_id: id from the RepoInfo object. hint: get_repos(). if None stay as same. branch: branch name. hint: get_repos() to see available branches. if None stay as same. version: version a

(repo_id: int, branch: Optional[str],
                    version: Optional[Union[int, str]], priority: Optional[int])