force flag on mv command

[switch1280]

When trying to mv a file to a location which already has a copy of the file with the same name, I get a message saying this:
move: /Ebook_Upload/CEN/ANTIGONE by Sophocles 2.epub: /Processed/ANTIGONE by Sophocles 2.epub already exists. Use force flag to override this behaviour

I cannot figure out the syntax for the force flag. From what I can tell, it's not been implemented.
Here's my orig command:
/root/gopath/bin/drive mv "ANTIGONE by Sophocles 2.epub" /usr/gdrive/Processed/

Again, it works fine if it's not trying to overwrite the destination file. I just need to know how to use the force command.