Today the Blender manual and its translations migrated from Subversion to Git.
See the blog post for more information:
See the new contributing instructions here:
https://docs.blender.org/manual/en/dev/contribute/index.html
On Linux and macOS, ensure you have git-lfs installed, otherwise you may get a repository with empty image files.
If you encounter problems, feel free to ask questions in this topic or in #docs on blender.chat.