$ git clone -n https://gitee.com/opencloudos-stream/systemd.git /var/lib/mock/dist-ocs23-build-277759-26161/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-ocs23-build-277759-26161/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/systemd
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3691a74 !13 update systemd package split Merge pull request !13 from cunshunxia/master