You can find the source of this version on GitHub at cloudfoundry/diego-release. It was created based on the commit
You can reference this release in your deployment manifest from the
- name: "diego" version: "1.27.0" url: "https://bosh.io/d/github.com/cloudfoundry/diego-release?v=1.27.0" sha1: "c364cefff0e3aeb31fabd26a0732ebb0ab6a0f21"
Or upload it to your director with the
bosh upload-release --sha1 c364cefff0e3aeb31fabd26a0732ebb0ab6a0f21 \ https://bosh.io/d/github.com/cloudfoundry/diego-release?v=1.27.0