When you clone the Flutter SDK with the flow provided in VS Code, you don't get the option to switch to channels other than stable.

Recommendation: Users who install the SDK through the flow offered in VS Code should have the ability to switch to all the available channels (currently master, main, beta and stable).

Screenshot of results in the terminal after cloning the SDK through the flow in VS Code and setting up the system's PATH environment variable (same result in VS Code's inbuilt terminal):