support git+mosh for unreliable connections

Hi,

 When working with big projects over a slow, unreliable connection,
currently there is no way to resume a clone or pull when the connection
breaks. mosh is a better replacement for ssh over unreliable
connections. supporting git+mosh protocol will go a long way in
supporting people who work with unreliable, mobile networks, especially
in developed countries (I personally have to try many times when working
with large projects as my 3g mobile connection keeps dropping. I
recently discovered mosh and it works like a charm. More about mosh
https://mosh.mit.edu/

Thanks Praveen