some way to refresh in-memory packed refs cache without relying on mtime #1348
Description
Summary 💡
Does it make sense to add API to trigger RefStore::force_refresh_packed_buffer() or make it public?
Motivation 🔦
In jj, gc is implemented as a combination of internal ref cleanup through gix API + shelling out git gc command. Since git gc will move loose refs to packed-refs, I want to ensure that the in-memory packed cache is invalidated. mtime isn't reliable if git gc is super fast.