---
title: Retention and refresh policy
type: control
status: active
domain: governance
created: 2026-07-19
updated: 2026-07-19
owner: MirrorArc Example
tags: [retention, refresh]
related: ["[[Source freshness policy]]", "[[Refresh public sources runbook]]"]
---

# Retention and refresh policy

Versioned public fixtures remain in Git while they support reproducible demonstrations. A refresh
must add or replace a clearly identified snapshot, preserve attribution, rerun contracts, and
review affected conclusions. Derived mirrors may be regenerated and are not committed in the
source example. Scratch downloads stay outside Git.