libgit2/libgit2 — pull request #1949 by ethomson (2013-11-06 23:44:29+00:00)
Title: Add git_packbuilder_hash to query pack filename

Adding a `git_packbuilder_hash` that exposes the written pack file hash from `git_indexer_hash`.

It appears that the `pack_oid` was supposed to contain this data? But was instead used to keep the per-object hash? Maybe I'm misreading this, though.