How to track history of personal changes in a repository?

Hi,

I'm looking for a way to track history of personal changes in a repository. I'd like to protect against accidentally pushing the changes to a remote branch. I imagine this working a little like `git ignore`, and a little like a separate branch. It might be like a personal sub-branch that is ignored by `git push`. Or it might be like a history of the work tree that runs parallel to the reflog and to the history of any given branch.

Does something like this exist in Git or a complementary tool?

I found `git update-index --skip-worktree`. I imagine it might be relevant in some kind of workflow where I can maintain a personal-worktree branch.

Does any of you have a personal workflow that addresses similar concerns?

Thanks.