How can i access the message from a locale which is not the current one?

[rezelute]

I have a file structure like so:
src\vue-i18n\locales\system\system.en-au.json
src\vue-i18n\locales\system\system.en-us.json

Imagine the current URL is: /en-au/home and the i18n current instance is set to en-au locale too.
I need to be able to do something like this:

console.log(i18n.t("system.something.title", { locale: "en-us" }));

So im trying to access the en-us message even though the current is en-au. How can i achieve this?