$ git clone -n https://gitee.com/fundawang/postgresql.git /var/lib/mock/dist-an23-build-262083-63899/root/chroot_tmpdir/scmroot/postgresql
Cloning into '/var/lib/mock/dist-an23-build-262083-63899/root/chroot_tmpdir/scmroot/postgresql'...
$ git reset --hard 53cf4ed052cea4ba60216a8d343442ebc6adc934
HEAD is now at 53cf4ed use upstream doc file