The way I commit on my private branch is different than how I merge those commits to the main branch. When working on the private branch, things can get messy and if they do, I just try to keep certain things separate from each other (refactorings and bug fixes should not go into the same commit). Once the work is done, I do a interactive rebase to tidy things up and then merge them afterwards. Sometimes the changes are not that much and it becomes a squash commit. I would definitely refrain from creating 100 (insignificant and possibly back-and-forth) commits on the main branch.