Many repacks, including potential "hot" releases, include the latest updates, fixes, or English translations.

Open the newly extracted folder and look for the setup.exe file.

If you would like, I can write a short, original analytical piece on:

Keep your antivirus and antimalware definitions updated. Scan every downloaded .rar file before extraction.

Repacks are highly popular in the gaming community for two primary reasons: 1. Bandwidth Savings