statLocal     func(rev, remote string) []string                                                   // cmd to stat local rev
	parseStat     func(rev, out string) (*RevInfo, error)                                             // cmd to parse output of statLocal

func (r *gitRepo) stat(ctx context.Context, rev string) (info *RevInfo, err error) {
	if r.local {
		return r.statLocal(ctx, rev, rev)
	}

	// Fast path: maybe rev is a hash we already have locally.
	didStatLocal := false
	if len(rev) >= minHashDigits && len(rev) <= 40 && AllHex(rev) {
		if info, err := r.statLocal(ctx, rev, rev); err == nil {
			return info, nil
		}
		didStatLocal = true
	}