Recipes like these aren't useless, but yes, they really need to be prefixed with whether they expect to start from a clean work tree and empty staging area. Or

Recipes like these aren't useless, but yes, they really need to be prefixed with whether they expect to start from a clean work tree and empty staging area. Or describe what they'll do to uncommitted changes, both staged & unstaged. Otherwise they pose a substantial risk of making the problem worse.