The original torrent (hash C0FFEE-2019-0302-UNITY-RPK ) has a seed count of 0.3 today. It is a dead magnet link.
While these bundles are popular for educational purposes, using a "repack" (an unofficial collection of paid assets) carries significant risks for professional developers. Licensing Issues: -REPACK- Unity Asset Bundle 2 Mar 2019
The primary goal is often to reduce the file size for faster downloading by using extreme compression algorithms. -REPACK- Unity Asset Bundle 2 Mar 2019