freebsd-update confusion

From: void <void_at_f-m.fm>
Date: Sat, 18 Feb 2023 21:53:56 UTC
In https://lists.freebsd.org/archives/freebsd-security/2023-February/000146.html
there's an SA for openssl.

If I upgrade (buildworld etc) on an amd box, it gets:

% openssl version
OpenSSL 1.1.1t-freebsd  7 Feb 2023

(as expected)

If freebsd-update is run on a 13.1-R arm64 machine, installed updates then
rebooted, it gets:

$ openssl version
OpenSSL 1.1.1o-freebsd  3 May 2022

??? 

The freebsd-update was run about 10 mins ago (feb 18th 1821 UTC)

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