git push - Git: which is the default configured remote for branch?

Question

I have a remote bare repository hub. I work only in the master branch. The last sentence of this error message below makes me wonder: How do I find out which is the "default configured remote for your current branch"? And how do I set it?

[myserver]~/progs $ git remote -v
hub     ~/sitehub/progs.git/ (fetch)
hub     ~/sitehub/progs.git/ (push)

[myserver]~/progs $ git branch -r
  hub/master

[myserver]~/progs $ cat .git/HEAD
ref: refs/heads/master

[myserver]~/progs $ git pull hub
You asked to pull from the remote 'hub', but did not specify
a branch. Because this is not the default configured remote
for your current branch, you must specify a branch on the command line.

Answer 1

You can do it more simply, guaranteeing that your .gitconfig is left in a meaningful state:

Using Git version v1.8.0 and above

git push -u hub master when pushing, or:
git branch -u hub/master

OR

(This will set the remote for the currently checked-out branch to hub/master)
git branch --set-upstream-to hub/master

OR

(This will set the remote for the branch named branch_name to hub/master)
git branch branch_name --set-upstream-to hub/master

If you're using v1.7.x or earlier

you must use --set-upstream:
git branch --set-upstream master hub/master