Files are assigned via MP Clothes addon which can be found here: mpClothes – Addon Clothing Slots
File gotta be installed here:
Grand Theft Auto V\mods\update\x64\dlcpacks\mpclothes\dlc.rpf\x64\models\cdimages\mpclothes_male.rpf\mp_m_freemode_01_mp_m_clothes_01
