Copying data from one postgres db to another

I want to copy data from one PG database to another, without moving the data to my local and back to the db -

pg_dump -U postgres source_db_name | psql -U postgres target_db_name

pretty certain this pipe is moving the data across the network, to my machine and back - I am wondering if there is something I can do more akin to this with a shell session:

postgres=> cp -U postgres -S source_db_name -T target_db_name

obviously the above command is ficticious

is there any such way?