Git fetch/pull stopped working

Hi guys!

git fetch and pull stopped working a few days ago on my server with the following message:

$ git fetch
ERROR: Repository not found.
fatal: The remote end hung up unexpectedly

fetch/push/pull still work just fine with the same (GitHub) repository from my local PC, and they also work fine with another GH repo from another server.

I tried comparing "git remote -v" output for local PC and server, they're the same. "$ GIT_TRACE=1 git fetch" gives somewhat different output on local PC and server: http://pastecode.com/bd3fc1a79f8e9d1eaf30911d9895938051c472f4 but the output is identical for the two servers I have (both are AWS instances, if that matters).

There are two clones of the repository on the server in question, both giving the same error. ssh git@github.com works as it should, so SSH keys are alright.

One quirk I noticed is that "git pull origin st+[Tab]" used to expand to a branch name; now it expands to a name of the file in current directory (and the filename is not the same as branch name).

I guess it's some problem with git install on the server - any ideas how I could try and diagnose this, besides GIT_TRACE?

A discussion on Stackoverflow: http://stackoverflow.com/questions/10438082/git-fetch-pull-have-stopped-working

Thanks in advance!

Egor.