$ git clone -n https://gitee.com/wenyuzifang/rpm-ostree.git /var/lib/mock/dist-an23-build-451339-73479/root/chroot_tmpdir/scmroot/rpm-ostree
Cloning into '/var/lib/mock/dist-an23-build-451339-73479/root/chroot_tmpdir/scmroot/rpm-ostree'...
$ git fetch origin 4889f81952d3e4cbf47be18a4a6232e4db4dad83:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/rpm-ostree
 * [new ref]         4889f81952d3e4cbf47be18a4a6232e4db4dad83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4889f81 Update code from upstream