Content Handling with Git Integration

I'm planing to activate the Git Integration on a new website. For this site, I'll want to adopt the Git-Flow, where I will create release branches from my development/stage branch, which I afterwards merge into my master/production branch.

Since all contents are managed by Git and since I'll be having quite a lot of dummy / testing content on stage - even on my local machine - I'm wondering how I'll be able to keep this content from stage outside of my release branches and therefore outside of master.

Does anybody have had similar cases and can point me into the right direction? That would be great! ❤️

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