Some other interesting tools in the space. Rust is using a tool called Josh to sync commits:

https://josh-project.dev

The blog post from the Rust people:

https://blog.rust-lang.org/inside-rust/2026/06/04/how-josh-h...

Meta used to have an open source tool called fbshipit. But according to its open source repo they no longer use it:

https://github.com/facebookarchive/fbshipit

Any others in this space?