symbolic-ref `refs/remotes/<name>/HEAD` is set to the same branch. e.g., if the remote
`HEAD` is pointed at `next`, "`git remote set-head origin -a`" will set
the symbolic-ref `refs/remotes/origin/HEAD` to `refs/remotes/origin/next`. This will
symbolic-ref `refs/remotes/<name>/HEAD` is set to the same branch. e.g., if the remote
`HEAD` is pointed at `next`, "`git remote set-head origin -a`" will set
the symbolic-ref `refs/remotes/origin/HEAD` to `refs/remotes/origin/next`. This will