$ git clone -n https://src.fedoraproject.org/rpms/trayscale.git /var/lib/mock/f42-build-side-1-3534261-46548/root/chroot_tmpdir/scmroot/trayscale
Cloning into '/var/lib/mock/f42-build-side-1-3534261-46548/root/chroot_tmpdir/scmroot/trayscale'...
$ git fetch origin eb2348160c13b169ea0955af3d966989653409e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/trayscale
 * [new ref]         eb2348160c13b169ea0955af3d966989653409e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb23481 update to 0.18.0