$ git clone -n https://src.fedoraproject.org/rpms/R-littler.git /var/lib/mock/f38-build-side-42-init-devel-966264-28808/root/chroot_tmpdir/scmroot/R-littler
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-966264-28808/root/chroot_tmpdir/scmroot/R-littler'...
$ git fetch origin 52ed871e9bd9f70b0f1969c89aa1f03a6595f403:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-littler
 * [new ref]         52ed871e9bd9f70b0f1969c89aa1f03a6595f403 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52ed871 New upstream release 0.3.18