I'm using [Fossil SCM](https://fossil-scm.org) with most of my projects, as it's free, quite lightweight yet mighty just like Geany :). Apart from distributed Version Control, Fossil also packs Issue tracker, Wiki, Forum, and Server all in single binary executable. So pretty much all I need for _my_ projects.
I recently found myself at an OSX machine without all of my usual toolbox ... that how I discovered Geany (BTW, excellent packaging for OSX)! But to my surprise GeanyVC did not support Fossil...
So here it is, it shouldn't be hard to add Fossil support to GeanyVC, since it mostly has similar commands and behavior as Git and Bazzar.