$ git clone -n https://gitee.com/opencloudos-stream/libmodulemd.git /var/lib/mock/dist-ocs23-build-40964-2059/root/chroot_tmpdir/scmroot/libmodulemd
Cloning into '/var/lib/mock/dist-ocs23-build-40964-2059/root/chroot_tmpdir/scmroot/libmodulemd'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libmodulemd
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 503ac40 !2 update to 2.15.0 Merge pull request !2 from 冯玮耀/master