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: "1.26.1" url: "https://bosh.io/d/github.com/cloudfoundry/diego-release?v=1.26.1" sha1: "5ecd341f6655cf18cc77b681b57a261f03d8c5ca"
Or upload it to your director with the
bosh upload-release --sha1 5ecd341f6655cf18cc77b681b57a261f03d8c5ca \ https://bosh.io/d/github.com/cloudfoundry/diego-release?v=1.26.1