The code at https://gitlab.wikimedia.org/repos/cloud/toolforge/builds-api can be extended to present a GET /build/{id} endpoint.
This can be later used by the CLI client.
Currently the client show this info:
tools.sample-php-buildpack-app@tools-sgebastion-10:~$ toolforge build show Name: sample-php-buildpack-app-buildpacks-pipelinerun-8jzx7 Start time: 2023-06-21T11:41:13Z End time: 2023-06-21T11:42:10Z Status: ok (Succeeded) Message: Tasks Completed: 1 (Failed: 0, Cancelled 0), Skipped: 0 Parameters: source_url: https://gitlab.wikimedia.org/toolforge-repos/sample-php-buildpack-app ref: first_commit image_name: sample-php-buildpack-app image_tag: latest repo_url: tools-harbor.wmcloud.org/tool-sample-php-buildpack-app builder_image: tools-harbor.wmcloud.org/toolforge/heroku-builder-classic:22