gitdags package
Copyright 2014-- Julien Cretel
Released under the LaTeX Project Public License 1.3 or later
Built on top of TikZ/PGF v3.0, the gitdags package allows you to effortlessly produce educational Git DAGs (directed acyclic graphs).
For arch linux install gitdags and xcolor-solarized packages with
$ git clone github.com/albfan/xcolor-solarized.git
$ cd xcolor-solarized
$ makepkg -s
$ sudo pacman -U xcolor-solarized<version>.xz
$ git clone github.com/albfan/gitdags.git
$ cd gitdags
$ makepkg -s
$ sudo pacman -U gitdags<version>.xz
then execute example
$ cd etc/scripts/
$ launch.sh