If you're seriously asking that question, you've not done your homework. The CZ was around for 10-15 years before Tanfoglio started making their version. There's nothing to debate.
The CZ-75 was not sold in Czechoslovakia until 1985, when it became popular among sport shooters. The guns did find a market in Africa and the Middle Est. In 1989, when the Soviet Union was losing control of its satellite nations, the Czech adopted the 75 for it's military, and CZ began selling their guns widely throughout Africa and the Middle East.
In the late '80s, it seems that a senior CZ firearms engineer defected to the West taking with him a lot of specs; Tanfoglio apparently hired him and made a clone of the CZ for resale. (They may have already started reverse-engineering the gun before then...)
Around 1990's, Tanfoglio began to expand their line, and made a number of changes (and some say, improvemens), and which they've continued to do over the years. Only the very earliest Tanfoglio models were true CZ clones - all subsequent CZ-based guns models are called "CZ-pattern" guns.
I can't find any reference to Tanfoglio-made guns being made or sold before the early 1990s. Tanfoglio made parts and frames for a number of gunmakers around that time, including Springfield (p9) and Magnum Research, and the Israeli IMI and IWI firms (which made weapons for their military and civilian resale). Turkey later bought licensing rights from Tanfoglio and made their own versions for their military, and then started expanding their own arms industry.
Because CZ (being a Soviet Bloc/Warsaw Pact member) consider their design specs to be military grade restricted info, they could not apply for international patent protections in the West, so Tanfoglio was free to steal the design.
The current CZ-pattern guns offered by Turkey and coming to the U.S. seem to be a combination of Tanfoglio and CZ design features. None of them seem to be clones (in the sense that only a small number of parts are interchangeable with the CZ design -- and, likely, the Tanfoglio version.)
I wasn't being serious...was being facetious.