$ git clone -n https://gitee.com/src-opencloudos-rpms/mtr.git /var/lib/mock/dist-oc9-build-59301-16463/root/chroot_tmpdir/scmroot/mtr
Cloning into '/var/lib/mock/dist-oc9-build-59301-16463/root/chroot_tmpdir/scmroot/mtr'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mtr
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b36d4f import mtr-0.95-4.tl4