After a git hub clone, hub.forkremote is not set

```
$ git hub clone -t gitpython-developers/GitPython
$ cd GitPython
$ git config hub.forkremote
```
-> empty output, return code 1
```
$ git hub pull new
Pushing 0.3 to 0.3 in origin
Error: git push --quiet --force origin 0.3:refs/heads/0.3 failed (return code: 128)
ERROR: Permission to gitpython-developers/GitPython.git denied to maxyz.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
```

Setting git config hub.forkremote fork fixes the issue.

Happy hacking,