Build using wrong branch names

[Sean-StarLabs]

The build script seems to use the values from lsb-release and these don't match the branch names in other repositories

i.e. It tries to clone branch jolnir from https://github.com/elementary/seeds which doesn't exist

[tintou]

Thanks for catching it, we've had one last minute change with lsb-release, it should be sorted with https://github.com/elementary/os/commit/ca27d3aadd536d0abaf588f4433df6ef07a4500c

[Sean-StarLabs]

That does the trick, thanks :)