[supergreg]

Maybe we could look at the problem from the other side. Create tools to manage multi-repos like if they were a single mono-repo. A docke-compose for git.

[monocasa]

It's sort of intrinsically a pain since then you lose atomic, cross project commits.

[zeckalpha]

https://myrepos.branchable.com

[zifnab06]

Android does this with a tool named repo. It tires into gerrit and you can treat the whole Android project as one repo.