On Fri, Jun 4, 2021 at 3:21 PM Derrick Stolee <stolee@xxxxxxxxx> wrote: > You > have convinced me that there are deeper things going on than just > the "unshallow, but with filters this time" situation. > > I have created an internal issue for my team to investigate this > when we have capacity for it. Awesome, thanks! One more comment on this: As I was trawling through release notes looking for the right minimum git client version to target/support, I discovered that the whole "fetch shallow, then unshallow filtered" flow, which I might have thought I came up with on my own, was intended to be supported with a change Xin Li made about a year ago, and landed in 2.28.0: https://github.com/git/git/commit/01bbbbd9daaa277a95ae46e5a32f6fba026610ac. As far as I can tell this implementation/behavior does *not* attempt to convert existing non-promisor packfiles to promisor packfiles, so either this behavior should be adjusted to do so, or we should consider this flow (and the presence of non-promisor packfiles at the "tip") supported...?