$ git clone -n https://src.fedoraproject.org/rpms/ghc-mountpoints.git /var/lib/mock/f40-build-1998143-44212/root/chroot_tmpdir/scmroot/ghc-mountpoints
Cloning into '/var/lib/mock/f40-build-1998143-44212/root/chroot_tmpdir/scmroot/ghc-mountpoints'...
$ git fetch origin 16ab06cfdb1f5f8bb77b4973289587606e615929:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-mountpoints
 * [new ref]         16ab06cfdb1f5f8bb77b4973289587606e615929 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 16ab06c bump release