$ git clone -n https://gitee.com/opencloudos-stream/sscg.git /var/lib/mock/dist-ocs23-build-6979-37/root/chroot_tmpdir/scmroot/sscg
Cloning into '/var/lib/mock/dist-ocs23-build-6979-37/root/chroot_tmpdir/scmroot/sscg'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/sscg
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6107b1f OCS package init