$ git clone -n https://src.fedoraproject.org/rpms/cosmic-initial-setup.git /var/lib/mock/f45-build-39674-750/root/chroot_tmpdir/scmroot/cosmic-initial-setup
Cloning into '/var/lib/mock/f45-build-39674-750/root/chroot_tmpdir/scmroot/cosmic-initial-setup'...
$ git fetch origin e419cb61eb019935d9b8410a5671e3a932d6066b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-initial-setup
 * [new ref]         e419cb61eb019935d9b8410a5671e3a932d6066b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e419cb6 Update to 1.8.0