NewCommitNodeIterCTime returns a CommitNodeIter that walks the commit history, starting at the given commit and visiting its parents while preserving Committer Time order.

NewGraphCommitNodeIndex returns CommitNodeIndex implementation that uses commit-graph files as backing storage and falls back to object storage when necessary.

NewObjectCommitNodeIndex returns CommitNodeIndex implementation that uses only object storage to load the nodes.

CommitNode is generic interface encapsulating a lightweight commit object retrieved from CommitNodeIndex.

CommitNodeIndex is generic interface encapsulating an index of CommitNode objects.

CommitNodeIter is a generic closable interface for iterating over commit nodes.