I've heard of that, but never read anything about it. From the wiki link:
"According to Hopi prophecy (as reported by Waters), shortly after the Blue Star Kachina is visible to all and the Day of Purification is realized, the True White Brother will come to earth in search of Hopi "who steadfastly adhere to their ancient teachings." It is said that if the True White Brother fails in his mission and is unable to find uncorrupted men and women, that the earth will be completely destroyed and none will be spared. However, if successful in bringing the symbols and finding those who still follow the true Hopi way of life, the world will be created anew and all the faithful will be saved from destruction."
Another page says this:
"The True White Brother will wear a red cloak, or red hat, and he will return, but he will arrive by coming from the East."
maitreya.org/english/PNative%20Americans/phopi2.htm
True White Brother? Red Hat? Searching for uncorrupted men and women? This sounds somewhat familiar.