Where does “καπέλο” come from?

καπέλο (Greek) comes from Italian cappello, from Medieval Latin capellus, from Medieval Latin cappa, from Latin capitulare, from Latin caput, from Proto-Italic kaput, from Proto-Indo-European káput, from Proto-Indo-European kap- — to seize, hold.

καπέλο (Greek): hat, cap; something hat shaped; illegal surcharge