Where does “pitkät kallet” come from?

pitkät kallet (Finnish) comes from Finnish Kalle, from Finnish -e, from Finnish hartia, from Serbo-Croatian hartija, from Greek χαρτί, from Koine Greek χαρτίον, from Ancient Greek χάρτης, from Ancient Greek χαράσσω — to yearn for; to enclose; bowels, intestines.

Ancestry of “pitkät kallet”, step by step

pitkät kallet traces back through two separate lines of ancestry.

via Finnish Kalle

Step	Language	Word	Meaning
1	Finnish	Kalle	A male nickname, a diminutive form of
2	Finnish	-e	Used for forming nouns from verbs or adjectives
3	Finnish	hartia	shoulder
4	Serbo-Croatian	hartija	paper
5	Greek	χαρτί	paper
6	Koine Greek	χαρτίον	paper, papyrus
7	Ancient Greek	χάρτης	sheet of paper, paper; book
8	Ancient Greek	χαράσσω	to sharpen; to engrave, carve, write, draw, stamp
9	Proto-Indo-European	ǵʰer-	to yearn for; to enclose; bowels, intestines

via Finnish pitkät kalsarit

Step	Language	Word	Meaning
1	Finnish	pitkät kalsarit	long underpants, long johns

Every word from Proto-Indo-European ǵʰer- →Every word from Ancient Greek χαράσσω →Every word from Ancient Greek χάρτης →