• VS Code Version: 1.96.0
• OS Version: macOS 14.7.1
• Github Codespaces extension version: 1.17.3

1. Open a Github Codespace using the Codespaces extension
2. Open the .devcontainer/devcontainer.json file in the codespace

Then this window pops up:

It seems that opening a devcontainer.json file causes VS Code or the Codespaces extension to try to invoke git locally, which opens a window if the "command line tools" package from Apple isn't installed.

In my opinion, VS Code shouldn't be trying to invoke git locally if I am only using it to access a codespace. But if it is necessary, perhaps VS Code should first check if git is available.