$ git clone -n https://src.fedoraproject.org/rpms/wl-mirror.git /var/lib/mock/f41-build-59146387-6571255/root/chroot_tmpdir/scmroot/wl-mirror
Cloning into '/var/lib/mock/f41-build-59146387-6571255/root/chroot_tmpdir/scmroot/wl-mirror'...
$ git fetch origin 88291af0e13186a14f4e342692f0e3c93602be89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wl-mirror
 * [new ref]         88291af0e13186a14f4e342692f0e3c93602be89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88291af Update to 0.18.2