A cloned Mammoth would be nothing like the real thing. It would be an Elephant in a Mammoth body. Without a single member of it's species around to teach it how to be a Mammoth it will never behave like one. It will take on the mental and social characteristics that it's host family will teach it.
Same with humans, if we all die out and an alien civilisation clones one of us, they will have no concept of tens of thousands of years of cultural intelligence humanity has acquired. They won't even know what the sun is.