Accident case filed against me u/s279

When I was driving back to Bengaluru from Mysore in a self drive rental car, a guy was hitting me from back. It was heavy traffic near Maddur. Police allowed people to take one line on other side of the divider, I was in right lane, at median people are joining to left lane at that instant one guy hit my car above the right back tire with his car front bumper. It was very minor accident happened at 5kmph speed. Other person wanted to claim insurance and went police. They filed case against me u/s 279. Since I don’t know kannada I can’t manage to ask so many questions to police. But sub inspector told me that, if I go to court and agree that we both made a mistake then We both will penalised with around 1000rs and case will be closed . My argument here is why would I agree that it’s my mistake when the other car was hitting me at back tire. I also have a doubt if they say complete mistake is on mine, this is how even they wrote on charge sheet. What should I do now when I go to court, should I agree to a mistake that is not done by me or should i fight. I don’t want to have any problems in future ???