Unable to update ports tree: server certificate verification failed

From: Philipp Ost <pj_at_smo.de>
Date: Sat, 16 Dec 2023 16:09:43 UTC 
Hi,

since at least yesterday evening, I am unable to update the ports tree. 
It fails with the following error:

make update
--------------------------------------------------------------
 >>> Updating /usr/ports from git repository
--------------------------------------------------------------
cd /usr/ports; git pull --rebase
fatal: unable to access 'https://git.freebsd.org/ports.git/': server 
certificate verification failed. CAfile: none CRLfile: none
*** Error code 1

Stop.
make: stopped in /usr/ports

The last commit I have is:

git log | head
commit ce82996724b503f52faef9fb02075b9d7aa94b01
Author: Yuri Victorovich <yuri@FreeBSD.org>
Date:   Thu Dec 14 12:56:08 2023 -0800

     science/{,py-}gemmi: update 0.6.3 → 0.6.4

     Reported by:    portscout

commit ba33e2445bdf7d25114d12ad77dda46a64b03fa3
Author: Larry Rosenman <ler@FreeBSD.org>

git is at version 2.43.0 if that matters at all.

Has anyone else experienced this? Anything I can do on my side?

Best
Philipp