$ git clone -n https://gitee.com/wenyuzifang/flatpak.git /var/lib/mock/dist-an23-build-485149-74348/root/chroot_tmpdir/scmroot/flatpak
Cloning into '/var/lib/mock/dist-an23-build-485149-74348/root/chroot_tmpdir/scmroot/flatpak'...
$ git fetch origin e79c78c103d936cb0562c26c18eb3aa47e4197c9:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/flatpak
 * [new ref]         e79c78c103d936cb0562c26c18eb3aa47e4197c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e79c78c Update code from upstream