Git clone over git protocol fails

I'm not sure if it's expected because of some recent infrastructure changes, but cloning Postgres repo with the following commands fails.

# Using command from Postgres docs at
# https://www.postgresql.org/docs/current/git.html

$ git clone git://git.postgresql.org/git/postgresql.git
Cloning into 'postgresql'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

# Removing the /git/ part, to match ssh protocol url on
# https://git.postgresql.org/gitweb/?p=postgresql.git;a=summary

$ git clone git://git.postgresql.org/postgresql.git
Cloning into 'postgresql'...
fatal: remote error: access denied or repository not exported: /postgresql.git

# Using the ssh protocol url from 
# https://git.postgresql.org/gitweb/?p=postgresql.git;a=summary

$ git clone ssh://git@git.postgresql.org/postgresql.git
Cloning into 'postgresql'...
Permission denied on repository for user gurjeet
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.