$ git clone -n https://gitee.com/wency_cn/edk2.git /var/lib/mock/dist-an23-build-494031-74584/root/chroot_tmpdir/scmroot/edk2
Cloning into '/var/lib/mock/dist-an23-build-494031-74584/root/chroot_tmpdir/scmroot/edk2'...
$ git fetch origin 169d280dc3c51e3fde089e0ed5af2b0dfa68f484:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/edk2
 * [new ref]         169d280dc3c51e3fde089e0ed5af2b0dfa68f484 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 169d280 Update code from upstream