I am doing updates through svn-CURRENT is an unsupported development version. Besides that, 13-CURRENT doesn't exist any more, so you have an old snapshot. Try the BETA1 release of 13.0.
Thanks.Sources have been moved to git some time ago.
Greetings, The FreeBSD project will be moving it's source repo from subversion to git starting this this weekend. The docs repo was moved 2 weeks ago. The ports repo will move at the end of March, 2021 due to timing issues. The short version is that we're switching the version control we're...forums.freebsd.org