[bug] Cannot git checkout repo which only has the branch main.

[VergeDX]

When I use code2idea, I found it can convert https://github.com/tobiastimm/raiju but cannot convert https://github.com/rose-pine/vscode, the
the error message is cannot do git checkout: Trace: Error: 'git clone' failed with status 128.

I think we should not hardcode "master" in code, provide a args to checkout branch or tags is good.
It also can use the default branch when git clone, the extra git checkout command is unnecessary.

[FlawlessDeveloper]

Its a upstream issue. You can append #branch-name to your github url, which will pull from this branch