Due to a poor branch strategy the main branch is far behind dev and the corresponding pull request contains over 500 commits.

In previous work I could directly push --force into the main branch, and therefore ignore those 500+ commits to only consider the resulting version of the code.

But now I cannot push into main, and therefore need to go with pull request.

¿Is there a way to discard all those 500+ commits in the pull request?

Thanks