Which Repos do I need to clone?

If I wanted to poke around in the code, which repos do I clone?
I would like to change the device reconnection behavior for the AllPlay binding. I looked at the code, and don’t think the logic for connection management is in there.
I would like to add extra charting periods for the stock charts.

For allplay it‘s openhab/openhab2-addons.

From here:

I see over a page(30+) of repositories. Let’s start at the assumption that I want to build Openhab. I guess openhab-distro is all I need? Anyway, that’s where I’m starting to see where it leads me.

Try taking a look at the docs as that tells you how to set up the development environment, and that will pull in the repository that contains the bindings for you automatically.