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Yes. Removing someone’s GitHub repository access blocks future actions on the hosted repository through that access, but it does not erase a clone already stored on their computer. For private or confidential code, access removal and local-data handling are separate offboarding steps.
What GitHub access controls—and what it does not
GitHub permissions govern actions on resources hosted by GitHub. GitHub defines a permission as the ability to perform a specific action; a role groups permissions. Removing a collaborator therefore changes what that person can do on the hosted repository, such as reading or writing through the removed grant. It does not reach into their device and delete files already copied there. GitHub Docs: permission levels for a personal-account repository and GitHub Docs: managing an individual’s access to an organization repository.
An analogy may help: hosted permissions are like a key to a building, while a clone is a set of files already carried away and stored elsewhere. Changing the key affects entry to the building, not the copy. This is an explanatory analogy, not GitHub terminology.
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What happens to a local clone when access is removed?
A clone is a local copy of a repository. GitHub explicitly says a removed collaborator can retain local clones. Removing a person may delete their forks of a private repository, but that does not remove a separate clone on their device. The local project files may still open, and the person may be able to inspect the history and files present in that copy.
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That local access is not proof that the person can fetch new commits or push changes to GitHub. Those are remote operations and require the relevant hosted permission as well as a working authentication method. GitHub’s documentation on authentication describes different methods for connecting through a browser, desktop client, API, or command line.
Authentication and repository permission are different checks
Authentication establishes which account or credential is connecting. Authorization determines whether that identity has permission to perform the requested action on a repository. A valid credential alone does not grant repository access, and having repository permission does not fix an invalid or unavailable credential.
When a Git operation fails, identify which check failed before changing settings:
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- Credential or authentication problem: the client cannot authenticate with the intended account or key. GitHub’s HTTPS guidance explains using a personal access token and a credential helper; password-based authentication for Git has been removed. See Why is Git always asking for my credentials?
- Repository permission problem: the identity is recognized, but it is not authorized for the requested repository action. GitHub Desktop lists insufficient repository permission as a possible cause of clone failure.
- SSH key problem: an error such as
Permission denied (publickey)can indicate that the expected public key is not configured for the account or is not being used by the client. - Submodule access problem: a parent repository’s access grant does not necessarily cover every submodule. If the failure names a submodule, check whether the account has access to that separate repository.
GitHub Desktop’s troubleshooting guidance covers repository-access and public-key errors: Troubleshooting common issues in GitHub Desktop.
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How to diagnose a local Git access error
- Identify the operation. Opening files in an existing project folder is local work. Cloning, fetching, pulling, and pushing contact a remote repository and require a usable connection and authorization.
- Check the remote and repository. Confirm that the configured remote points to the expected repository, and determine whether the problem is with the main repository or a submodule.
- Check the credential method. For HTTPS, confirm that Git is using a supported credential method rather than an account password. For SSH, verify that the intended key is configured and available to the Git client.
- Check hosted permission separately. Ask a repository administrator to confirm whether the account still has the access level needed for the operation. If access was intentionally removed, a new credential will not restore that permission.
- Match the error to the failed check. Repeated credential prompts point toward credential handling; a public-key denial points toward SSH authentication; a recognized account that cannot access a repository points toward authorization. For a submodule-only failure, request access to that submodule from its administrator.
What repository owners should do during offboarding
For an organization repository, GitHub says the organization is responsible for ensuring that people who lose access delete confidential information or intellectual property retained locally. Removing hosted access is necessary to end the person’s access through that grant, but it does not retrieve existing clones.
Repository owners should follow their organization’s offboarding and data-handling process, including how it accounts for local copies, backups, and approved work environments. GitHub’s documentation establishes that clones can remain; it does not prescribe a complete device-forensics or data-erasure procedure. Do not assume that removing an account, deleting a fork, or revoking a token wipes files from another person’s storage. See GitHub’s guidance on managing an individual’s access to an organization repository.
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