$ git clone -n https://src.fedoraproject.org/rpms/kanshi.git /var/lib/mock/f40-build-802821-144113/root/chroot_tmpdir/scmroot/kanshi
Cloning into '/var/lib/mock/f40-build-802821-144113/root/chroot_tmpdir/scmroot/kanshi'...
$ git fetch origin 5a75c85a471382ec44326868d2bc7e268dbdaf76:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kanshi
 * [new ref]         5a75c85a471382ec44326868d2bc7e268dbdaf76 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a75c85 Update to 1.6.0 (#2268225)