The short answer is: No, it is generally not recommended for Minecraft.
Run the "Verify BIN files" tool if included to ensure no files are missing. minecraft fitgirl repack upd
Compressed Size: The repack reduces the original 996 MB size to approximately 639 MB for faster downloading. Executive Summary: Is it worth it
This is often faster than debugging version conflicts. Latest Game Version: The FitGirl Repack is updated
to mask their activity and protect against ISP throttling or legal notices. Conclusion
C:\Program Files (x86)\Minecraft Fitgirl Repack\ or .minecraft in %AppData%.versions folder. You will see a folder named something like 1.19.2-fitgirl.1.19.2-fitgirl.jar file.client.jar for version 1.20.4.1.20.4.jar to exactly match the old repack’s name (e.g., 1.19.2-fitgirl.jar). Overwrite the file.assets folder inside the root directory and replace it with the assets folder from a legitimate 1.20.4 installation.Lossless MD5 Perfect: All files are verified to be identical to the original Mojang release once installed.