If GitHub Copilot is not working or is not responding in Visual Studio or VS Code, it's most likely facing an authentication, network, or compatibility issue.

Microsoft-owned GitHub announced the general availability of a revamped Projects that's intended to more fully integrate the project planning and development processes.

Microsoft is backing Git rather than attempting to recreate the distributed version-control wheel. Here's the roadmap detailing how Git support is coming to Visual Studio and TFS.