I’m totally down with modules, and mounting content directories. 
I’m starting a new project, and now I’m wondering how I want to add new content to a site, while also being configured for deployment via modules and separate content sources. My prior projects already had the content in separate repos and I haven’t updated anything, so this is the first time I’m running into this. 
I thought maybe looking into adding replace to go.mod, and as I don’t commit that to file (I only initialize modules for local development) that might just work.
What do you do? How do you add content while using modules? 