I'd like to point to two (or rather one and a half) solutions that I got aware of when watching streaming of "Git Merge 2017"[0]. There should be here people who were there; and hopefully video of those presentations and slides / notes would be soon available. [0]: http://git-merge.com/ First tool that I'd like to point to is Git Virtual File System, or GVFS in short (which unfortunately shares abbreviation with GNOME Virtual File System). The presentation was "Scaling Git at Microsoft" by Saeed Noursalehi, Microsoft. You can read about this solution in ArsTechnica article[1], and on Microsoft blog[2]. The code (or early version of thereof) is also available[3] - I wonder why on GitHub and not Codeplex... [1]: https://arstechnica.com/information-technology/2017/02/microsoft-hosts-the-windows-source-in-a-monstrous-300gb-git-repository/ [2]: https://blogs.msdn.microsoft.com/visualstudioalm/2017/02/03/announcing-gvfs-git-virtual-file-system/ [3]: https://github.com/Microsoft/GVFS The second presentation that might be of some interest is "Scaling Mercurial at Facebook: Insights from the Other Side" by Durham Goode, Facebook. The code is supposedly available as open-source; though I don't know how useful their 'blob storage' solution would be of use for your problem. HTH -- Jakub Narębski