Where does “gols-” come from?

gols- (Proto-Indo-European) comes from Proto-Indo-European gels- — voice, cry; to call; voice, cry; to call.

Ancestry of “gols-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	gels-	voice, cry; to call; voice, cry; to call

gols- — Etymology, Origin & Word History | Etymology Explorer