"git branch -d" doesn't remove a branch if that means losing track of some local commits. "-D" doesn't check that. The "git branch" commands only operate on you

"git branch -d" doesn't remove a branch if that means losing track of some local commits. "-D" doesn't check that. The "git branch" commands only operate on your local repo, they don't push any changes to remote repos and they don't pull commits from anywhere.