$ git clone -n https://src.fedoraproject.org/rpms/ghc-brick.git /var/lib/mock/f40-build-743586-111265/root/chroot_tmpdir/scmroot/ghc-brick
Cloning into '/var/lib/mock/f40-build-743586-111265/root/chroot_tmpdir/scmroot/ghc-brick'...
$ git fetch origin 170df06333cacd91b7453efa1980452e38855882:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-brick
 * [new ref]         170df06333cacd91b7453efa1980452e38855882 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 170df06 update to 1.9