title: How do you refresh the remotes in Magit?
body: <p>Magit is really nice, but I have yet to figure out how to create a remote branch from it, or how to refresh the remote branches it knows without deleting the remote and adding it back in.
  Currently I go to github, add a branch, then go into magit, delete the remote, and then add it back. Is there a better way?</p>