$ git clone -n https://gitee.com/opencloudos-stream/smem.git /var/lib/mock/dist-oc9-epol-build-99640-60488/root/chroot_tmpdir/scmroot/smem
Cloning into '/var/lib/mock/dist-oc9-epol-build-99640-60488/root/chroot_tmpdir/scmroot/smem'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/smem
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f14c9d1 package init