$ git clone -n https://gitee.com/wency_cn/dtc.git /var/lib/mock/dist-an23-build-502046-74794/root/chroot_tmpdir/scmroot/dtc
Cloning into '/var/lib/mock/dist-an23-build-502046-74794/root/chroot_tmpdir/scmroot/dtc'...
$ git fetch origin 0f7ca4dd2323d84daacfc798e9eb5b94344d474f:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/dtc
 * [new ref]         0f7ca4dd2323d84daacfc798e9eb5b94344d474f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f7ca4d Update code from upstream