I hope any person who has to go to trial and this officer is called as a witness uses this as an example as to why they arent a good witness.
“Officer, in 2023 you fatally shot a man after you said he got out of his car and lunged at you with a knife. You later backtracked on this and said he was in his car with the windows up. How can we trust what you have to say if you can’t remember what happened then?”