$ git clone -n https://gitee.com/fundawang/postgresql.git /var/lib/mock/dist-an23-build-295376-65781/root/chroot_tmpdir/scmroot/postgresql
Cloning into '/var/lib/mock/dist-an23-build-295376-65781/root/chroot_tmpdir/scmroot/postgresql'...
$ git fetch origin 997d706e1eb6c8cdbec9be6bb7ad42687f9ee6e9:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/postgresql
 * [new ref]         997d706e1eb6c8cdbec9be6bb7ad42687f9ee6e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 997d706 15.4