Why didn't MI's Ishan Kishan bat in IPL 2023 Qualifier 2 against GT?

MI wicketkeeper-batter Ishan Kishan didn't bat during IPL 2023 Qualifier 2 against GT. During post-match interview, MI captain Rohit Sharma said he didn't know how that happened. Kishan was hit on eye by teammate Chris Jordan's elbow while he was changing sides after GT's 16th over. Kishan was replaced by Vishnu Vinod, who became the first-ever concussion substitute in IPL.