Would they have to doctor anything, at all? provided that there is an alien moonbase (and, as much as I believe in ETs, I don't believe in that,
yet), it's probably very well camouflaged. after all, it would only need a single 'hanger door' or pad for the UFOs to land on... the rest of the
structure could be underground, well hidden from the view of any satellite.
Well,
The moon has been heavily mapped for decades, now... I assume that the person who started this post was mentioning some new undertaking that might
bring to light anything that's been constructed since the 'good old days' of space exploration.
In terms of real estate, though, ownership of any part of the moon is specifically outlawed by several acts of the United Nations and various
international treaties. Should the Chinese 'claim' the moon when they land in a few years, they will be in violation of those laws.
In the same light, the United States is expressly forbidden from undertaking its "denial of space" proposal.