$ git clone -n https://gitee.com/wency_cn/galera_1770756511.git /var/lib/mock/dist-an23-build-513289-75099/root/chroot_tmpdir/scmroot/galera_1770756511
Cloning into '/var/lib/mock/dist-an23-build-513289-75099/root/chroot_tmpdir/scmroot/galera_1770756511'...
$ git fetch origin b8c07651c2e06ed8056dde7a3a9c15911dd2c4bb:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/galera_1770756511
 * [new ref]         b8c07651c2e06ed8056dde7a3a9c15911dd2c4bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8c0765 Update code from upstream