Keeping certain numbers of commits in history using git

Question

I have one repository where a lot of large binary files live. Is it possibly set git to make it keep only last n number of commits? Such as i only want to keep last 5 copies of files in this repository history? But i would very like to not do this manually every 5 commits?

Answer 1

The only way to do that is to periodically rewrite the repository.

A commit contains a hash of the commit meta data, the commit info, the commit's parent(s) and the tree you're committing. It's not possible to change something in the past without affecting the present.