CommitFilter / CommitSortStrategies Understanding

I am trying to understand what "CommitSortStrategies" is actually doing to the commit collections that I am getting back and am just looking for clarification if this is correct.

Git, by default (cmd line app), are shown in reverse chronological order, so:

• git (default sort) == CommitFilter/SortBy of (Undefined)
• git --reverse != CommitFilter/SortBy of Reverse
• git --reverse == CommitFilter/SortBy of Reverse | Time
• git --topo-order == CommitFilter/SortBy of Topological
• git --reverse --topo-order == CommitFilter/SortBy of Reverse | Topological
• git --______ ?= CommitFilter/SortBy of None
• CommitFilter/SortBy of None != CommitFilter/SortBy of (Undefined)

Is that list correct/complete?

(FYI: I have a multi-million object repo with millions of refs and have reverted to shelling to git to get the commit lists between cross-merge branches as I can not get a direct match between libgit2's ls-trees and gits, my head hurts....)

BTW: What order does CommitSortStrategies.None follow? Based on ref creation order on the file-system, maybe?

A sample for a future reader:

# Note: Piping to head as you can not use -n <number>, --max-count=<number> as that is applied before commit ordering
git log HEAD..master --format="%ci %h %s" --reverse | head -10

So based upon the equivalence list above, in libgit2sharp this becomes:

var filter = new CommitFilter {
    SortBy = CommitSortStrategies.Reverse | CommitSortStrategies.Time,
    Since = master,  // determined by a prior repo.Lookup<Tree>
    Until = head, // determined by a prior repo.Lookup<Tree>                    
};
repo.Commits.QueryBy(filter).Take(10);

Commencez par les points d’entrée CommitFilter, CommitSortStrategies et QueryBy référencés dans l’issue, puis comparez leur comportement avec les exemples de commandes git listés. Documentez si chaque équivalence proposée est correcte et précisez la sémantique de tri de CommitSortStrategies.None ; la tâche est terminée lorsque les questions disposent d’une explication faisant autorité.