I've searched the internet, including TouTube, and Spotify, and I haven't found one single reference to the song title in its original language, no lyrics, and not a single recording by any Hopi or other native American singer. With the dusclaimer that my search wasn't exactly professionally or scientifically correctly performed, I have to say that I now seriously doubt that this is indeed a Hopi song. It seems more like something added by some European or American hippie to add more meaning and relevance to the song. I usually don't like to talk about cultural appropriation because I think it's a very complicated term, not seldom misused as a way to describe cultural inter-and exchange, but in this case, I feel that, yes, this might very well be a case of cultural appropriation.