First, "total overdose" – I know that's a song by Nas. His album "Illmatic" has a track called "Total Overdose". Then "repack by rg" – repack usually means someone has re-packaged the original release, maybe in a different format or with additional content. "Rg" might refer to a fan or group (Revenants), and "Naswari" – maybe a typo for "Nas" and "Raw"? Or perhaps a fan site.