This is fdupes 2.1.2. If you're an end-user then you probably want the file named fdupes-2.1.2.tar.gz. The other archives are created automatically by GitHub and are intended for developers.
Changes from 2.1.1 to 2.1.2:
- Do not enter ncurses mode when --immediate option given.
- Fix logging/memory corruption bug when using --log with --immediate.