Alternatively, you could use, and customize, an open-source self-hostable alternative, such as gitorious https://gitorious.org/gitorious
> BTW, I recently learned the Gutenberg was not his name and is really a significant historical inaccuracy.
Do you have any source for this fact that Gutenberg wasn't using "Gutenberg" as his last name?
Wallau adds, "His surname was derived from the house inhabited by his father and his paternal ancestors 'zu Laden, zu Gutenberg'. The house of Gänsfleisch was one of the patrician families of the town, tracing its lineage back to the thirteenth century." Patricians (aristocrats) in Mainz were often named after houses they owned. Around 1427, the name zu Gutenberg, after the family house in Mainz, is documented to have been used for the first time.
Github does have issues with Unicode repo names, so it may be worth moving elsewhere for that reason.
But in the short term, I like Github because they have the most to gain by making git easy to use. If I can get away with people editing books in their browsers on github then we have a editing/rendering toolchain right out of the box!