git - Squash history but keep X most recent commits

Question

I'm attempting to remove a large portion of our history in a remote branch, we need to keep the most recent history of ~20-50 commits.

The branch in question has >3500 commits, I have attempted the suggestions from how-to-delete-all-git-commits-except-the-last-five but I always end up with conflicts..

There's almost exclusively merge commits in the branch, is there a way to squash the first ~3500 commits and keep the most recent history only that doesn't cause conflicts with merges?

Answer 1

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