$ git clone -n https://src.fedoraproject.org/rpms/cosmic-settings.git /var/lib/mock/f45-build-5020-337/root/chroot_tmpdir/scmroot/cosmic-settings
Cloning into '/var/lib/mock/f45-build-5020-337/root/chroot_tmpdir/scmroot/cosmic-settings'...
$ git fetch origin df4df957cd41875f61536492facce3d0bcc8a58c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-settings
 * [new ref]         df4df957cd41875f61536492facce3d0bcc8a58c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df4df95 Update to 1.6.0