Renekton has incredible dive potential with his jungler. If you think he is going to stack waves and dive you with his jungler, try to get your jungler to help and try to thin the wave. You want the wave on your side most of the time so you can freely farm without getting engaged

3Q>E max Take fleet for survivability or lethal tempo for scaling if you are more confident about spacing him Farm with Q and E pre six Be careful of his level 1 E start Do not get in range and trade with him pre six

Trades are always losing if he gets on you You have to space his E1 E2 range so if he E1s through minions you have enough time to Q him and run from him before he can E2 onto you. Essentially, try to always space him with 1.5x the range of his E. Ult when he stuns or uses the bulk of his fury on you. Post six if he wastes his E1 wait until it goes on cooldown then Q him and look for free autos while spacing his Q range.