$ git clone -n https://src.fedoraproject.org/rpms/alevt.git /var/lib/mock/f42-build-3342317-44991/root/chroot_tmpdir/scmroot/alevt
Cloning into '/var/lib/mock/f42-build-3342317-44991/root/chroot_tmpdir/scmroot/alevt'...
$ git fetch origin 34b00d2f95bd8e5102f8f50540761e49eaa0a159:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/alevt
 * [new ref]         34b00d2f95bd8e5102f8f50540761e49eaa0a159 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34b00d2 Orphaned for 6+ weeks