Mono's source code is being migrated to GitHub on July 22nd, starting at 9am Boston time.
We are psyched that Github was kind enough to host Mono's large repositories for free on their system. We are also taking advantage of their new Organizations functionality.
Gonzalo posted the following details about the migration:
We are moving our source code repository to GitHub. On July 22nd ~9am EDT (1300 GMT) the subversion repository at "svn +ssh://mono-cvs.ximian.com/source" will be set to read-only mode and kept that way forever. We estimate that the process of migrating all the projects and moving them to GitHub will take more than 3 and less than 8 hours. Once it is completed we will send an email to this list with URLs to the new repositories, FAQs,...
If you have any questions about the migration, please ask them here and we will add them to our Git Migration FAQ.