Can you elaborate a bit more of what you actually did?
E.g.
with what version did you do a repo init?
did repo download some other git repository
did you change anything which might lead to the error?
One thing which looks certainly wrong is that the address ends in .git.git .
That is one .git to much.
The other unusual thing is that it uses https: and not http:. So likely you did change something in .repo/manifest.xml
Can you elaborate a bit more of what you actually did? E.g. - with what version did you do a repo init? - did repo download some other git repository - did you change anything which might lead to the error?