$ git clone -n https://src.fedoraproject.org/rpms/rubygem-jekyll-toc.git /var/lib/mock/f38-build-side-42-init-devel-696380-26996/root/chroot_tmpdir/scmroot/rubygem-jekyll-toc
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-696380-26996/root/chroot_tmpdir/scmroot/rubygem-jekyll-toc'...
$ git fetch origin 1e2951d1509d91da74f78ab918f65c7a41d4fa2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rubygem-jekyll-toc
 * [new ref]         1e2951d1509d91da74f78ab918f65c7a41d4fa2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e2951d Update to 0.18.0 (rhbz#2162995)