Okay, I think I figured out what the president was talking about last night when he tweeted that "Lester Holt got caught fudging my tape on Russia."
Here's Rudy Giuliani during a July 25 interview with Sean Hannity. Giuliani says that Trump "he made it clear to Lester Holt he [fired Comey] knowing that the investigation would continue so he couldn't obstruct it." 
Later in the segment, Giuliani says of the media, "They conveniently leave that off whenever they play that tape, amazing what they do with tapes."
This doesn't make a lot of sense, and has nothing to do with Holt, who aired what Giuliani seems to be talking about. For my money though, it seems like Trump is saying he's fine with an investigation into Russia hacking, but with not one about him.
