Hello!
I still need to figure out how to use this, but thanks a lot for your hard work!
When I run the extension's command, git commit runs in the terminal I'm currently using, which might cause issues if something like Gulp is running.
Besides potential issues, git commit will not actually commit since the terminal is running a task, hence won't take any input.
It will just print it and that's it:

So I suggest you have the extension command to open a new terminal tab, and run the command in it.
You can use vscode.window.createTerminal for that 🙂