git v18.104.22.168 was released on Jun 10, 2013 and is available as a Ubuntu package in my personal PPA. Launchpad currently does not allow package building for Ubuntu 11.10 anymore so there will be no more updates for Ubuntu 11.10.
To use my repository follow these instructions.
git 22.214.171.124 Release Notes
Fixes since v1.8.3 ------------------ * When $HOME is misconfigured to point at an unreadable directory, we used to complain and die. The check has been loosened. * Handling of negative exclude pattern for directories "!dir" was broken in the update to v1.8.3. Also contains a handful of trivial code clean-ups, documentation updates, updates to the test suite, etc.