Git: workflow for two dev working on one branch

Say, young Anakin and Caption Kirk set out for a new project, codename “Star War Trek”, whose end result would bring balance to the force and peace to the Federation. The Jedi council has decided that in order to achieve their ultimate goal, the first step is to reveal the true identity of Sith. They, therefore, have assigned our two young heroes to this challenging mission: sith_reveal. May the force be with them.