$ git clone -n https://gitee.com/wency_cn/python-build.git /var/lib/mock/dist-an23-build-492829-74562/root/chroot_tmpdir/scmroot/python-build
Cloning into '/var/lib/mock/dist-an23-build-492829-74562/root/chroot_tmpdir/scmroot/python-build'...
$ git fetch origin 3cd36f44674df1baab9108c6ec8d042d94b6906a:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-build
 * [new ref]         3cd36f44674df1baab9108c6ec8d042d94b6906a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cd36f4 Update code from upstream