http://evgeny-goldin.com/blog/3-ways-install-git-linux-ubuntu/
$wget http://kernel.org/pub/software/scm/git/git-1.7.2.3.tar.gz
$tar -xvf git-1.7.2.3.tar.gz
$cd git-1.7.2.3/
$sudo apt-get install libcurl4-gnutls-dev libexpat1-dev gettext libz-dev libssl-dev
$make prefix=/usr/local all
$sudo make prefix=/usr/local install
$which git
/usr/local/bin/git
$git –version
git version 1.7.2.3