[Feature Request] Iterative Branch Updates for Existing Feature Branches

Bug Description
When using Claude in GitHub it creates a feature branch and to make chagnes. If after it is finished I am not happy with the changes and I leave a comment in the same issue to fix someting, it creates another branch from the main / master branch. It would be quicker and use less tokens to itterate on the original feature branch it created. The current way of working means I have to make sure I only create a pull request from the last branch it created, I have to delete multiple branches, and I am assuming it uses more tokens as it has to rewrite lots of the same code it already created in the previous branches.