$ git clone -n https://gitee.com/src-opencloudos-rpms/mtr.git /var/lib/mock/dist-oc9-build-72505-47825/root/chroot_tmpdir/scmroot/mtr
Cloning into '/var/lib/mock/dist-oc9-build-72505-47825/root/chroot_tmpdir/scmroot/mtr'...
$ git fetch origin 4795fb3b6fd13d0cb1d2a13b4c11715de833683c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mtr
 * [new ref]         4795fb3b6fd13d0cb1d2a13b4c11715de833683c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4795fb3 import mtr-0.95-5.tl4