Function run_commit_transaction 

pub fn run_commit_transaction<F: RepositoryFacts>(
    invocation: &CommitInvocation<'_>,
    checks: &mut ShippedChecks<F>,
    request: &StageRequest,
) -> Result<TransactionResult, TransactionStop>

What: Run one commit through the transaction: capture, private preparation, serial landing and post-landing completion. Why: Every non-dry-run commit runs through it, including clean commits and commit -a, because native git commit keeps index.lock on disk through hooks and the editor.

In TS you’d write (pseudocode):

return await runCommitTransaction({ args, gitPath, policyOptions, concurrency });