On what days are the git servers available to obtain the ports tree?

I'm a maintainer for well over 100 ports. But more often than
not, I am not permitted to obtain the ports tree from any of
the FreeBSD git servers:

# git clone -o freebsd --config 
remote.freebsd.fetch='+refs/notes/*:refs/notes/*' 
https://git.freebsd.org/ports.git PORTS-20220502

returns:
error: RPC failed; HTTP 504 curl 22 The requested URL returned error: 504
fatal: error reading section header 'shallow-info'

What is the charge for obtaining a current ports tree? Can I purchase an
annual subscription?

What else do I need to obtain the tree?

Thanks.

l8r,
Chris