From the Guccifer 2.0 Wikipedia page:

Some of the documents "Guccifer 2.0" released to the media appear to be forgeries cobbled together from public information and previous hacks, which had been mixed with disinformation.[9][10][11]

https://en.m.wikipedia.org/wiki/Guccifer_2.0

Could you show what specifically was fake?

I'm not an intelligence agent, so no, I can't tell you what was and wasn't faked. You would have to look into the various reports and intelligence findings yourself for that info.