Sample applications have a git repository already created

Like many people, I want to build an application from a nordic sample.

But every sample application I create with vs code has version control already present. Git commands to figure out where the repo is located don't seem to return any results.

I have read through this, which seems to be titled with what I want to do, but am not able to understand how to apply it to my problem. developer.nordicsemi.com/.../adding_code.html

What is the correct way to transition from a sample application to a version controlled application in your own repository?

Thank you.

nrf sdk 2.4.2 in vscode

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