You can not clone bitcoin because there is nothing there to copy, bitcoin are result of caculation on the blockchain data, to clone bitcoin you have to alter the blockchain data, and blockchain is designed in such a way that since data is stored and secured they can not be altered this is common misconception.
Why do you mention that as a common misconception? Because in my opinion, every asset that is very valuable and valuable in the eyes of many people will always be difficult to clone, because if an asset that has good value like Bitcoin can be easily cloned by many people, that will be a problem that can affect its value too. So it really can't be cloned by anyone because it is hindered by blockchain technology which is very reliable and very trustworthy.