This plugin adds some commands to the heroku gem to interact with the app's repo
To install:
$ heroku plugins:install heroku-repo
$ heroku repo:clone -a appname
This will clone the applications repo to your local filesystem. No collaboration necessary!
$ heroku repo:download -a appname
This will download the applications repo as a tarball.
$ heroku repo:gc -a appname
This will run a git gc --agressive against the applications repo. This is done inside a run process on the application.
$ heroku repo:purge_cache -a appname
This will delete the contents of the build cache stored in the repository. This is done inside a run process on the application.
$ heroku repo:reset -a appname
This will empty the remote repository.