How to deal with a pull request if it was not accepted?

Question

git

The pull request was not accepted, all the changes I made should be deleted from one of the four files, it is unnecessary to change the rest of the files.
The working conditions at our company are one task, one committee.
How to proceed?

Answer 1

git reset --soft HEAD~1
<make your edits>
git push -f

Answer 2

Just glue the commits