Greek translation from the Coptic(?) of The Gospel of Thomas - specifically saying no. 108

I've read where The Gospel of Thomas was originally composed in the Coptic language (actually some sayings are believed to have been written in Greek predating the Coptic) but I've also seen where scholars have 'reversed engineered' the Coptic back into a Greek dialect. I'm wondering if such a document is easily accessible and its location. Specifically I'm looking for the Greek (from Coptic?) for saying number 108: "Jesus said, 'He who will drink from my mouth will become like Me. I myself shall become he, and the things that are hidden will become revealed to him.'"