$ git clone -n https://src.fedoraproject.org/rpms/chkconfig.git /var/lib/mock/f40-build-750553-115123/root/chroot_tmpdir/scmroot/chkconfig
Cloning into '/var/lib/mock/f40-build-750553-115123/root/chroot_tmpdir/scmroot/chkconfig'...
$ git fetch origin ff4cf928aeff0cc032d043e4ae169f70d4de41f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/chkconfig
 * [new ref]         ff4cf928aeff0cc032d043e4ae169f70d4de41f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff4cf92 1.25