How to Multihost with Mono-Language?

I’m looking to define multiple baseUrl’s (multihost), however I am working within a single language (Mono-Language).

Is there a way to generate multihost websites without having to hack the language tags in config.toml?

For example I will be publishing to both of these baseUrls: for production for development

The difference between these hosts is not Language, but rather URL path.

I’d like to just run hugo command once and avoid writing a script where I specify baseUrl and invoke hugo many times for each baseUrl. I don’t think multi-host should necessarily imply multi-lingual.