Examples
Worked examples
- Is an instance
The Linux kernel's official GitHub mirror, tracking kernel.org's git tree.
- Is an instance
An institutional repository mirroring its internal GitLab projects to GitHub for community engagement.
Counter-examples
Looks similar, but isn't
- Not an instance
A fork created independently with no automated sync from upstream is not a mirror.
- Not an instance
A clone on a developer's laptop is not a mirror.
Editorial commentary
GitHub-mirror arrangements are common where a project’s canonical repository lives on a self-hosted Git server, GitLab instance, or institutional Gerrit installation, but a public mirror on GitHub is maintained for ease of discovery, issue-tracking by external contributors, or CI integrations. Pushes flow from upstream to mirror via scheduled jobs or webhooks. For long-term preservation, the upstream is the canonical artefact; the GitHub mirror is a working convenience.
References
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Also known as
GitHub read-only mirror
Machine-readable encodings
Use in your systems
<role vocab="credit"
vocab-identifier="https://casrai.org/dictionary/"
vocab-term="GitHub mirror"
vocab-term-identifier="https://casrai.org/dictionary/term/github-mirror" />{
"@context": "https://schema.org",
"@type": "DefinedTerm",
"name": "GitHub mirror",
"identifier": "https://casrai.org/dictionary/term/github-mirror",
"description": "A copy of a Git repository (or set of repositories) hosted on GitHub that tracks an upstream source repository elsewhere, typically maintained for redundancy, visibility, or community-engagement reasons rather than as the canonical primary copy.",
"inDefinedTermSet": "https://casrai.org/dictionary/domain/research-data-infrastructure/",
"url": "https://casrai.org/dictionary/term/github-mirror",
"sameAs": [
"GitHub read-only mirror"
],
"license": "https://creativecommons.org/licenses/by/4.0/"
}
