Here is Putin saying that Americans had landed on the Moon and it's impossible to fake a such thing. [0]
Now please remember where you learned that 'fact' and at the very least stop trusting that source. At best, review all that you learned from them and discover more fakes.
Can you provide a link? I have been unable to find any report of Putin's expressing such a disbelief.
I did find a report that "a former chief of Russian space agency Roscosmos has voiced doubt over the authenticity of the 1969 Apollo 11 Moon landing", but of course that is not the same thing:
