You can find the source of this version on GitHub at concourse/concourse-bosh-release. It was created based on the commit
You can reference this release in your deployment manifest from the
- name: "concourse" version: "3.12.0" url: "https://bosh.io/d/github.com/concourse/concourse-bosh-release?v=3.12.0" sha1: "f853597b14725aa039f173b79f57432161b67117"
Or upload it to your director with the
bosh upload-release --sha1 f853597b14725aa039f173b79f57432161b67117 \ https://bosh.io/d/github.com/concourse/concourse-bosh-release?v=3.12.0