Undo doesn't seem to work with git submodules

What version of the IDE extension are you using?

0.4.76

What subscription do you have?

Business

Which IDE are you using?

Cursor + VS Code

What platform is your computer?

Darwin 23.1.0 arm64 arm

What issue are you seeing?

When you run a prompt to get a diff, if git submodules are touched, and you don't like the commit, clicking undo does not undo the change.

What steps can reproduce the bug?

Make a repo with a submodule.
Ask for a simple prompt that will change a submodule file.
Click undo on the diff.
Check the status of the branch on the submodule, the diff is not undone.

What is the expected behavior?

codex's undo button should undo all diffs, even for git submodules.

Additional information

_No response_