$ git clone -n https://gitee.com/src-opencloudos-rpms/libpq.git /var/lib/mock/dist-oc8-build-124269-73838/root/chroot_tmpdir/scmroot/libpq
Cloning into '/var/lib/mock/dist-oc8-build-124269-73838/root/chroot_tmpdir/scmroot/libpq'...
$ git fetch origin dc7bb7a86eaa776e57970a7fec0031688010915c:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libpq
 * [new ref]         dc7bb7a86eaa776e57970a7fec0031688010915c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc7bb7a import libpq-13.20-1.tl3