Question

Is it possible to get info about how much space is wasted by changes in every commit — so I can find commits which added big files or a lot of files. This is all to try to reduce git repo size (rebasing and maybe filtering commits)

Answer 1

Forgot to reply, my answer is:

git rev-list --all --pretty=format:'%H%n%an%n%s'    # get all commits
git diff-tree -r -c -M -C --no-commit-id #{sha}     # get new blobs for each commit
git cat-file --batch-check << blob ids              # get size of each blob