Here's the version I've always run into:
Here, from online etymological dictionary, but I've
seen it many other places. What's wrong with it?
http://www.etymonline.com/index.php?term=cravat
cravat
1656, from Fr. cravate, from Cravate "Croatian," from
Ger. Krabate, from Serbo-Croat Hrvat "a Croat," from
O.Slav. Churvatinu "Croat," lit. "mountaineer,
highlander," from churva "mountain" (cf. Rus. khrebet
"mountain chain"). Cravats came into fashion 1650s in
imitation of linen scarves worn by Croatian
mercenaries in the French army in the Thirty Years
War.