git - etckeeper pushing to github

I set up etckeeper and added the file /etc/etckeeper/commit.d/60github-push in order to push the commit to github.

[orschiro@thinkpad etc]$ sudo cat /etc/etckeeper/commit.d/60github-push 
#!/bin/sh 
set -e
if [ "$VCS" = git ] && [ -d .git ]; then   
  cd /etc/   
  git push origin master 
fi

However, pushing to github fails as etckeeper tries to push as root. Should the use of sudo not preserve my user account settings for git, including my ~/.ssh keys?

[orschiro@thinkpad etc]$ sudo etckeeper commit "test"
[master de5971c] test
 Author: orschiro 
 3 files changed, 2 insertions(+), 1 deletion(-)
 rename etckeeper/{ => commit.d}/60github-push (100%)
 create mode 100644 test
no such identity: /root/.ssh/id_rsa: No such file or directory

no such identity: /root/.ssh/id_dsa: No such file or directory
no such identity: /root/.ssh/id_ecdsa: No such file or directory
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Answer

To preserve the current ssh keys for when you're in root, use sudo -E.

That way there's no need to add anything to the root ssh config