$ git clone -n https://gitee.com/src-opencloudos-rpms/umockdev.git /var/lib/mock/dist-oc9-build-125367-74967/root/chroot_tmpdir/scmroot/umockdev
Cloning into '/var/lib/mock/dist-oc9-build-125367-74967/root/chroot_tmpdir/scmroot/umockdev'...
$ git fetch origin 52811f36e3146d4ee57c3d73b927214c87019e02:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/umockdev
 * [new ref]         52811f36e3146d4ee57c3d73b927214c87019e02 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52811f3 import umockdev-0.17.17-6.tl4