How to change a site setting via the Console

I believe a setting regex needs updating, and want to test with a new value, but when I go SiteSetting.key = value it blocks me because of the regex. Is there a way to force update a value even if it doesn’t match the setting’s regex?

Edit: this worked, though be very careful!

cd /var/discourse/
./launcher enter app
rails db
discourse=> update site_settings set value='newvalue' where name='settingname';

And then exit out, and restart the app:

./launcher stop app
./launcher start app