$ git clone -n https://gitee.com/yan1hcdc/polardb.git /var/lib/mock/dist-an23-build-447739-73363/root/chroot_tmpdir/scmroot/polardb
Cloning into '/var/lib/mock/dist-an23-build-447739-73363/root/chroot_tmpdir/scmroot/polardb'...
$ git fetch origin 18cc5238f0a3de755ad8c2259c35a71623c8c266:KOJI_FETCH_HEAD
From https://gitee.com/yan1hcdc/polardb
 * [new ref]         18cc5238f0a3de755ad8c2259c35a71623c8c266 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 18cc523 fix build error for riscv64