There have been a few different "Government" runs in the last few/several years, all with varying small differences. Unfortunately, Tisas has used the term "Parkerized" in the past to describe the shade of Cerakote. This means that the term "Government" doesn't mean much at all when it comes to Tisas.
Doing a search on finishes on Tisas' website, there are only four models currently listed as having an actual manganese phosphate (Parkerized) finish:
1911 A1 "ASF" U.S. Army 45 SKU: 10100539 | UPC: 723551444191
1911 A1 "ASF" U.S. Army 9 SKU: 10100540 | UPC: 723551444207
1911 Tank Commander 45 SKU: 10100114 | UPC: 723551440537
1911 Tank Commander 9 SKU: 10100116 | UPC: 723551440544
IIRC, the Tank Commanders were the first pistols to be offered in true Parkerizing. There was a small run of very, very early (maybe the initial run) "A.S.F." (Armed Services Family) pistols that had the wrong font or font size for the US government property markings. Tisas discovered that error, Cerakoted those pistols, and sold the lot; I believe they all went to the Fin Feather Fur chain in Ohio and were sold at a discount. Otherwise, all the "A.S.F." pistols have actual Parkerizing.
I'm not sure about Tisas changing the SKUs over time, but I am confident that the UPC within a model changed when something like the finish changed. Pay attention to the UPC. Anything else is going to be a crapshoot and most likely Parkerizing-shaded Cerakote.
Tisas USA 1911 Pistols