$ git clone -n https://src.fedoraproject.org/rpms/keylime.git /var/lib/mock/f42-build-3279307-41337/root/chroot_tmpdir/scmroot/keylime
Cloning into '/var/lib/mock/f42-build-3279307-41337/root/chroot_tmpdir/scmroot/keylime'...
$ git fetch origin c1c554e4f67c21e605577c8a001b73e91f067d32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/keylime
 * [new ref]         c1c554e4f67c21e605577c8a001b73e91f067d32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1c554e Drop call to %sysusers_create_compat