Install Git from Latest Source on Ubuntu

Install dependencies

sudo apt-get update
sudo apt-get install libssl-dev libcurl4-gnutls-dev libexpat1-dev gettext

Download Git source code

wget https://github.com/git/git/archive/master.zip

Unzip and install

If you have not unzip installed on your system yet, please run sudo apt-get install unzip to install this tool.

unzip master.zip
cd git-master
make prefix=/usr/local all
sudo make prefix=/usr/local install

Upgrade to a newer version

git clone https://github.com/git/git.git
cd git
make prefix=/usr/local all
sudo make prefix=/usr/local install