In my Plus version both Clone and Create New Version are shown. I tried both on one of my test assets and got two clones. I wonder if there is any difference. (edit) Make New Version bumps the kuid version by 1.
Never do this! Because it will keep the original KUID and will desrtroy the KUID2 chain of the author if your file might land on the DLS.
The cleanest way would be to create a new asset (it will carry your KUID) and copy the files into your new asset.