getCommitDiff()

// Get commit diff (shows changes from parent)
const commitDiff = await repo.getCommitDiff({
  sha: "abc123def456...",
});

// Get commit diff compared to a specific base
const customDiff = await repo.getCommitDiff({
  sha: "abc123def456...",
  baseSha: "def789abc123...", // optional base commit to compare against
});

// Process file changes
commitDiff.files.forEach((file) => {
  console.log(`${file.state}: ${file.path}`);
  console.log(`Raw status: ${file.rawState}`);

  if (file.state === "renamed") {
    console.log(`Renamed: ${file.oldPath} -> ${file.path}`);
  }
});

// Filter to specific files
const filteredDiff = await repo.getCommitDiff({
  sha: "abc123def456...",
  paths: ["package.json", "src/main.ts"],
});