i think they are not sumerian they are akkadian. also sumerians and semitic peoples have relationship.
so you cant say original turks are hairy. they came from central asia. but today in turkey we are so much hairy. its doing in 1000 years. sumerians so many years mixed with akkadians.
aton.ttu.edu Bahaeddin_Ogel.asp
Description of Oğuz Kağan in the Oğuz Kağan Epic:
Bir insan idi fakat, tüyleri dolu idi(He was a human, but he was hairy),
Vücudu kıllı idi, çok uzun boylu idi(His body was hairy, he was very tall).
Güder at sürüleri, tutar, atlara biner,
Daha bu yaşta iken, çıkar, avlara gider.
Geceler günler geçti, nice seneler doldu.
Oguz da büyüyerek, bir yahşi yiğit oldu!