sds/overcommit · error · Overcommit::Exceptions::GitRevListError

Unable to check if commits on the remote ref will be…

Error message

Unable to check if commits on the remote ref will be overwritten: #{result.stderr}

What it means

Error "Unable to check if commits on the remote ref will be overwritten: #{result.stderr}" thrown in sds/overcommit.

Solutions

1. Read the git stderr shown in the message for the exact failure (missing ref, auth error, network problem) and fix it.
2. Fetch the remote ref first (`git fetch <remote>`) so `git rev-list` can compare the local and remote commits locally.
3. Check network connectivity and credentials to the remote, then retry the push.

When it happens

Trigger: Thrown at lib/overcommit/hook_context/pre_push.rb:84 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sds/overcommit@fee0cd74b2 (2026-08-23). Data as JSON: /api/errors/99467be59db68fd6. Report an issue: GitHub.

Appendix: source

Thrown at lib/overcommit/hook_context/pre_push.rb:84

      def to_s
        "#{local_ref} #{local_sha1} #{remote_ref} #{remote_sha1}"
      end

      private

      def ref_range
        "#{remote_sha1}..#{local_sha1}"
      end

      def overwritten_commits
        return @overwritten_commits if defined? @overwritten_commits

        result = Overcommit::Subprocess.spawn(%W[git rev-list #{remote_sha1} ^#{local_sha1}])
        if result.success?
          result.stdout.split("\n")
        else
          raise Overcommit::Exceptions::GitRevListError,
                "Unable to check if commits on the remote ref will be overwritten: #{result.stderr}"
        end
      end
    end
  end
end

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