The real Gojo Satoru returned in chapter 261 of the Jujutsu Kaisen manga. However it's not exactly what fans expected, as his body is being controlled by someone else.
Below is the official explanation about the return of “Gojo” in the new chapter of the manga:
Gojo Satoru returns in Jujutsu Kaisen 261
Just as Sukuna tried to deploy Territory, he saw Gojo standing there and looked skeptical. Sukuna wondered if it was really him, but he pushed that thought aside saying that it was impossible.
“Gojo Satoru” walked over, raised his head to reveal the stitches on his forehead and sparkling eyes.
Sukuna suddenly realized who it was and punched Yuji. He stepped forward and said, “I'm sorry for underestimating you! I didn't know you could go that far, YUTA OKKOTSU!”.
If what Sukuna said, it seems that Yuta copied Kenjaku's technique and took over Gojo's body.
As seen in a flashblack scene, Yuta decides to let Rika eat Kenjaku and copy his cursed technique, which will allow Yuta to change his body. Maki objects to this plan, but Hakari says she has one condition. They will use this plan when everyone is defeated and they have no other choice.
Mei Mei explains the good and bad sides of copying Kenjaku's technique, taking over Gojo's body:
1. If Kenjaku's technique is of the type that operates continuously or intermittently, the body or soul cannot continue to maintain itself and will die.
2: If the technique does not work continuously, even though you will not die immediately, you will still die in the end.
3: If the technique is a technique that only needs to be activated once, he can use Infinite even for more than 5 minutes.
Mei says that after the body swap is complete, Yuta's curse technique will most likely be suppressed and he will live in Gojo's body from now on.
And that's how Gojo returns in chapter 261 of Jujutsu Kaisen.
https://gamek.vn/jujutsu-kaisen-xac-nhan-cach-gojo-satoru-tro-lai-trong-chuong-261-178240524143744187.chn