$ git clone -n https://gitee.com/wency_cn/edk2.git /var/lib/mock/dist-an23-build-493911-74562/root/chroot_tmpdir/scmroot/edk2
Cloning into '/var/lib/mock/dist-an23-build-493911-74562/root/chroot_tmpdir/scmroot/edk2'...
$ git fetch origin d457e8d30521bc18470c7676bb52034095fb4cbc:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/edk2
 * [new ref]         d457e8d30521bc18470c7676bb52034095fb4cbc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d457e8d Update code from upstream