Earlier quoted context omitted.
We do, it's called Fossil! http://fossil-scm.org/ Fossil tracks issues (tickets), documentation, and wiki pages at the same level as it tracks code, so when you clone a Fossil repo, everything gets downloaded to your local computer. You can then respond to tickets and perform repo maintenance offline, syncing everything to the server when you're back up. Edit: A few weeks ago I got a job a one-hour train ride away. I…
<3 Fossil. I wish it were more popular so I could use it on non-personal projects and still have a hope of attracting collaborators...
Being fair, fossil performance on giant scale projects might not compare quite as well against git or proprietary solutions like Perforce, but for the large majority of projects I expect it is more than adequate.