I have no intention of tricking anyone into thinking I'm the original! I do think I offer improvements in some cases, so in cases where the project is something I intend for other people to ever see/use, I do explain why I think it is better, but I also will always put the original prominently to make sure people can find their way back to that if they want to. For example, the only time I've done this so far:

https://github.com/alexispurslane/jjdag