I would like Codex to incorporate a change review experience similar to GitHub Copilot’s.

Currently, when Codex modifies multiple files, I can see the changes, but I lack a convenient way to review the entire file and decide—block by block—which changes to keep and which to undo. The “Undo” button typically reverts the entire task, even when I only want to discard a specific part.

It would be very useful if Codex automatically used Git to:

Create a checkpoint before each task.
Display the full file alongside the changes.
Allow “Keep” or “Undo” actions at the file, block, or line-selection level.
Retain accepted changes while reverting only the rejected ones.
Offer an option to accept or undo the entire task.
Prevent automatic checkpoints from cluttering the standard commit history.

This would combine Copilot’s ease of review with the safety and traceability of Git. It would be especially useful for large tasks where some changes are correct while others need to be discarded.