$ git clone -n https://src.fedoraproject.org/rpms/munge.git /var/lib/mock/f42-build-3273259-41310/root/chroot_tmpdir/scmroot/munge
Cloning into '/var/lib/mock/f42-build-3273259-41310/root/chroot_tmpdir/scmroot/munge'...
$ git fetch origin b24846069ac30403f0160784eda822b7f57caba0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/munge
 * [new ref]         b24846069ac30403f0160784eda822b7f57caba0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b248460 Drop call to %sysusers_create_compat