It kind of royally confuses the system....
1. Have a cron job that runs "freebsd-update cron" every night at 23:10.
2. Run "freebsd-update upgrade -r 12.3-RELEASE" before 23:10
3. Run "freebsd-update install" some time after 23:10
4. Reboot
Ah the fun...
Other fun ways others have tried?
(I do think it would be nice if "freebsd-update cron" had some way to notice an "upgrade-in-progress" and perhaps skip doing what it does...)
1. Have a cron job that runs "freebsd-update cron" every night at 23:10.
2. Run "freebsd-update upgrade -r 12.3-RELEASE" before 23:10
3. Run "freebsd-update install" some time after 23:10
4. Reboot
Ah the fun...
Other fun ways others have tried?

(I do think it would be nice if "freebsd-update cron" had some way to notice an "upgrade-in-progress" and perhaps skip doing what it does...)