.git mode constantly refreshing index #1186

Hey folks,

I'm using Sapling in a large monorepo in .git mode and I find that after common day to day workflows like editing files, amending commits, rebasing, I constantly hit issues with the git index needing to be reconstructed. The usual symptom here as I experience it is that ISL hangs for a long time. I then usually just run "git status" in the terminal where I see clearly the refreshing like Refresh index: 69% (123005/178268).

Is there anyway to make SL operations somehow interact with git in a way that does not destroy the index and/or generally keep things fast?

If I was using SL in "SL mode" rather than ".git" mode would this issue disappear? I've generally avoided "SL mode" because it's not clear to me if this mode works seamlessly with a typical git workflows like pushing commits to github, collaborating with colleagues who use git in a traditional way, etc.