What does "private branch" mean? All branches are "private" until I publish them. If I create a branch which tracks a remote branch and make a commit to it, my

What does "private branch" mean? All branches are "private" until I publish them. If I create a branch which tracks a remote branch and make a commit to it, my local branch is "private" and the commit is "private. However, I can push that "private branch" to other developers, and then it becomes public.