freebsd-update "No changes have been downloaded" "files have been modified locally"

Upgrading from 13.2 to 13.3, wanted to install 13.2 security patches first.
Not sure if that's necessary or not.

freebsd-update fetch
...
The following files are affected by updates. No changes have
been downloaded, however, because the files have been modified
locally:
/etc/ssh/sshd_config

Looking at
   https://github.com/freebsd/freebsd-src/tree/releng/13.2/etc
there is not even a /etc/ssh directory

Since these are updates to 13.2-RELEASE, I can see why the updated
file wouldn't be in the releng tree, but shouldn't the original be
there?
Where are the sources for the updates, i.e.
Where is the source for the file it wants to install?

I think I don't understand what the releng tree is showing, as it
also lists subdirs root and sendmail which aren't present in 13.2 /etc.

If I look in
   /var/db/etcupdate/current/etc/ssh
I see an sshd_config

What, exactly, is in the "current" tree?  Are these the files prior to
performing an update, so it can be rolled back?

Thanks,

Gary