$ git clone -n https://src.fedoraproject.org/rpms/cosmic-randr.git /var/lib/mock/f45-build-39677-750/root/chroot_tmpdir/scmroot/cosmic-randr
Cloning into '/var/lib/mock/f45-build-39677-750/root/chroot_tmpdir/scmroot/cosmic-randr'...
$ git fetch origin d900a2458a7b01a38a19d2ae0d04fe4baca10f41:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-randr
 * [new ref]         d900a2458a7b01a38a19d2ae0d04fe4baca10f41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d900a24 Update to 1.6.0