Transifex page for PackageKit  is not working for quite some time. We were using 'ssh://email@example.com/srv/git/PackageKit' to commit files, but now we cannot even pull files. We only get not very helpful log message:
'CommandError: "['git', 'clone', 'ssh://firstname.lastname@example.org/srv/git/PackageKit', u'packagekit.master'] returned exit status 1"'.
You now need to use http://www.transifex.net/projects/p/packagekit/ -- sorry.
I wish there were some warning about the change, so there would be less frustration, but now it's ok. I've removed PackageKit from Fedora's Transifex.