$ git clone -n https://gitee.com/wency_cn/python-pyfakefs.git /var/lib/mock/dist-an23-build-491634-74530/root/chroot_tmpdir/scmroot/python-pyfakefs
Cloning into '/var/lib/mock/dist-an23-build-491634-74530/root/chroot_tmpdir/scmroot/python-pyfakefs'...
$ git fetch origin a02a53247d63168a86a55b05cd30e244cb75b888:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/python-pyfakefs
 * [new ref]         a02a53247d63168a86a55b05cd30e244cb75b888 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a02a532 Update code from upstream