Feed EOF to git user and password requester.

[David Niklas]

Hello,
I have some git repos and sometimes I find that one of them ceases to
exist. When that happens, I get a prompt for my user name and password.

This causes a problem because my automatic update script hangs waiting
for input. I tried "cat /dev/null | git pull", but git still requests the
information and halts.

Anyone have any ideas? I did search extensively online.

Thanks,
David