See: @USARestoring
That's who sent the original tweet. Trump copied and pasted the whole thing into a new tweet from his address.
We do get this on the 28th, and we see Tom Gregg that Tweeted Gowdy, and it is not a direct copy paste job by Trump.
The page may have given the idea to Trump to Tweet or endorse Gowdy as his AG and he agrees with it.