$ git clone -n https://gitee.com/wency_cn/dwarves.git /var/lib/mock/dist-an23-build-502056-74794/root/chroot_tmpdir/scmroot/dwarves
Cloning into '/var/lib/mock/dist-an23-build-502056-74794/root/chroot_tmpdir/scmroot/dwarves'...
$ git fetch origin e8f66152d349a7a7fbd80040bda719a2afd2f439:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/dwarves
 * [new ref]         e8f66152d349a7a7fbd80040bda719a2afd2f439 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8f6615 Update code from upstream