"[llvm-dev] Updates on SVN to GitHub migration":

"""Tues Oct 23, 2018:

The latest monorepo prototype[1] will be moved over to the LLVM
organization github project[2] and will begin mirroring the current
SVN repository.  Commits will still be made to the SVN repository
just as they are today.

All community members should begin migrating their workflows that
rely on SVN or the current git mirrors to use the new monorepo.  

For CI jobs or internal mirrors pulling from SVN or
http://llvm.org/git/*.git you should modify them to pull from
the new monorepo and also to deal with the new repository
layout.

[...]

Around the time of next year's developer meeting (1 year at the most),
we will turn off commit access to the SVN server and enable commit
access to the monorepo.  At this point the monorepo will become the
'one source of truth' for the project.  Community members *must* have
updated their workflows by this date and are encouraged to begin
updating workflows ASAP.

[...]

[1] https://github.com/llvm-git-prototype/llvm
[2] https://github.com/llvm/"""