For continued decentralized operations something like https://github.com/google/git-appraise https://github.com/google/git-appraise looks good. It's like Fossil

For continued decentralized operations something like https://github.com/google/git-appraise https://github.com/google/git-appraise looks good. It's like Fossil-SCM's distributed tickets but for code review. It can also mirror to Gihtub and Phabricator and has a web interface too. Most importantly it doesn't break the decentralized aspect of git.