For quite a while at Google there have been git extensions/tools for working with Piper. They're pretty widely used, but haven't been "officially" supported. T

For quite a while at Google there have been git extensions/tools for working with Piper. They're pretty widely used, but haven't been "officially" supported. There's a new project that allows you to use hg with Piper/CitC; I've been using it for about a month and it's been working really well. No clue how it works, though.