$ git clone -n https://gitee.com/src-opencloudos-rpms/librsvg2.git /var/lib/mock/dist-oc9-build-100523-64662/root/chroot_tmpdir/scmroot/librsvg2
Cloning into '/var/lib/mock/dist-oc9-build-100523-64662/root/chroot_tmpdir/scmroot/librsvg2'...
$ git fetch origin b978e77090b4e91bab9a20c608a6777e48092ba0:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/librsvg2
 * [new ref]         b978e77090b4e91bab9a20c608a6777e48092ba0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b978e77 import librsvg2-2.56.90-6.tl4