$ git clone -n https://gitee.com/wency_cn/nginx_1764787704.git /var/lib/mock/dist-an23-build-491104-74530/root/chroot_tmpdir/scmroot/nginx_1764787704
Cloning into '/var/lib/mock/dist-an23-build-491104-74530/root/chroot_tmpdir/scmroot/nginx_1764787704'...
$ git fetch origin 7a98181d52a289c7c177e0617f463111287894b0:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/nginx_1764787704
 * [new ref]         7a98181d52a289c7c177e0617f463111287894b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a98181 Update code from upstream