Typos etc.
Are you still working from tools? What instructions did you follow?
Maybe it's just a typo: you are in ~/extensiions/Translate but git review was looking for extensions/Translate/.git/ . I think mw:Gerrit/Tutorial#Configure_Git is supposed to help, too.
Too many instructions. I simply cannot remember them. There are many pages on git, gerrit, installing and downloading mediawiki, and so on in various wikis. Assume that I read them all.
The double i is just an issue coming from copying stuff here to this page. I reality, there are several directory names on several hosts (among them tools lab). I trashed directories when they were not working, always attempting as clean a start as possible.
mw:Gerrit/Tutorial is one of the many pages that I read. It has a bunch of errors and inconsistencies. What do I do with the issues that I found? Write them on the talk page?