This specific search is popular because the film is a "survival procedural"—packed with scientific dialogue that requires clear audio. A repack ensures that the mixing of the original English audio with the new Tamil dubbing is seamless, offering a better experience than a poorly synced "cam" recording found on other less reliable websites.
A piracy public indexing site popular in Southern India that specializes in ripping and uploading Hollywood movies with regional audio voiceovers (primarily Tamil).