$ git clone -n https://gitee.com/opencloudos-stream/ustreamer.git /var/lib/mock/dist-oc9-epol-build-120035-70908/root/chroot_tmpdir/scmroot/ustreamer
Cloning into '/var/lib/mock/dist-oc9-epol-build-120035-70908/root/chroot_tmpdir/scmroot/ustreamer'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/ustreamer
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9ae7d6 !1 add ustreamer Merge pull request !1 from xuke/master