Comment 3 for bug 1489839

I know, sorry for the delay! This has been because our current deployment strategy for the git backend (a.k.a. turnip) is very cumbersome. I've been working on a complete revamp of that (https://code.launchpad.net/~cjwatson/canonical-mojo-specs/git-build-label/+merge/275472) and hope to get that rolled out this week, at which point we can land the final bit of this in the Launchpad webapp.