[PATCH 5/6] index-pack: optionally reject packs with duplicate objects

Git should never generate packs with duplicate objects. However, we may see such packs due to bugs in Git or other implementations (e.g., JGit had such a bug a few years ago). In theory, such packs should not be a problem for us (we will simply find one of the instances of the object when looking

[PATCH 5/6] index-pack: optionally reject packs with duplicate objects

Git should never generate packs with duplicate objects. However, we may see such packs due to bugs in Git or other implementations (e.g., JGit had such a bug a few years ago). In theory, such packs should not be a problem for us (we will simply find one of the instances of the object when looking