$ git clone -n https://gitee.com/fundawang/postgresql.git /var/lib/mock/dist-an23-build-262082-63899/root/chroot_tmpdir/scmroot/postgresql
Cloning into '/var/lib/mock/dist-an23-build-262082-63899/root/chroot_tmpdir/scmroot/postgresql'...
$ git reset --hard a4ca246c29a21b2f941c102bbbe7919e561d2510
HEAD is now at a4ca246 15.3