The push is the "pull request" in this model. It triggers CI, which in turn triggers notifications to the reviewer that there's pending work. The `rr` namespace

The push is the "pull request" in this model. It triggers CI, which in turn triggers notifications to the reviewer that there's pending work. The `rr` namespace acts as the inbox for requests. Deleting the `rr` branch is like closing it. There's also clarity over ownership that way - the `rr` branch is owned by the owner of the repository and they can push to it, to make it into whatever form they want. Devs may also explicitly send a message indicating there's work to be reviewed, but they don't have to.