{"version":"2.1.246","anchor":"later-workers-on-self-hosted-runners-can-prewarm-too","canonical_anchor":"later-workers-on-self-hosted-runners-can-prewarm-too","heading":"Later workers on self-hosted runners can prewarm too","tier":"internal","area":"Self-Hosted Runners","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.246\/e\/later-workers-on-self-hosted-runners-can-prewarm-too","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.246","markdown":"### Later workers on self-hosted runners can prewarm too\n\nAny worker on a self-hosted runner can prewarm, not just the first one.\n\n**What**\n\nPrewarm eligibility no longer requires being the very first worker; any valid worker number of 1 or above qualifies, and the caller is told whether this is a later one.\n\n**Details**\n\n- Applies to self-hosted runners only.\n- New helpers parse a checkpoint hint from the session config, validating repo names and 40 to 64 character hex commit SHAs, capping the list at 64 entries and logging what was dropped.\n\n**Evidence**\n\n`worker epoch unknown (`\n\n- Area: Self-Hosted Runners\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 3\/5"}