$ git clone -n https://src.fedoraproject.org/rpms/plymouth-theme-breeze.git /var/lib/mock/f41-build-847616-163991/root/chroot_tmpdir/scmroot/plymouth-theme-breeze
Cloning into '/var/lib/mock/f41-build-847616-163991/root/chroot_tmpdir/scmroot/plymouth-theme-breeze'...
$ git fetch origin 4ebce46a86875ffe4425598b1f08c3fe8381c29d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth-theme-breeze
 * [new ref]         4ebce46a86875ffe4425598b1f08c3fe8381c29d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ebce46 6.1.5