After Gojo's first domain clash with Sukuna he loses and malevolent shrine goes to town on him. Malevolent shrine targets everything, animate and inantimate objects, it just uses different parts of the technique for both of them, cleave and dismantle respectively. Even with Gojo's impressive CE reinforcement he was still getting slashed like crazy and was pushing his RCT to the max to not be fileted into a 5 star meal by Sukuna, but his clothes don't have RCT. We've seen what cleave does to clothes, Yuji had a chunk taken out of him and he lost that chunk of his shirt for the rest of the fight, and that was only from one cleave. Gojo's entire fit should have been in complete taters, barely holding on by a thread, especially based on how long he was in Malevolent Shrine multiple times. That is why following at least the first or second domain clash, Gojo should have been nude the rest of the fight, from a logical standpoint.