What does the '-f' option do in the git mv command?

The '-f' option in the git mv command is used to force the operation to overwrite an existing file if it already exists in the destination location. This is important, especially in scenarios where you may be renaming or moving a file, and a file with the same name already exists in the target directory. By using the '-f' option, you direct Git to proceed with the move even if that means replacing an existing file, which helps avoid issues that may arise from file name conflicts.

The other options do not accurately describe the function of the '-f' option in the git mv command. Specifying a file format or indicating a fast move operation does not relate to this option's purpose, while the notion of forcing the addition of a change implies a different context within version control that does not align with the specific functionality of '-f' in the context of moving files.