Image SHA from Docker Hub doesn't exist

[czerasz-flaconi]

On Docker Hub I see the sha d37e1f717dc01df3a838955d29a149c569352c0991b1d7cf11b4ebca8c6c7f55

I get an error when I try to use it:

$ docker pull appropriate/curl:latest@sha256:d37e1f717dc01df3a838955d29a149c569352c0991b1d7cf11b4ebca8c6c7f55
Error response from daemon: received unexpected HTTP status: 500 Internal Server Error

When I pull latest it's different then "advertised" on Docker Hub (c8bf5bbec6397465a247c2bb3e589bb77e4f62ff88a027175ecb2d9e4f12c9d7)

$ docker pull appropriate/curl:latest
latest: Pulling from appropriate/curl
Digest: sha256:c8bf5bbec6397465a247c2bb3e589bb77e4f62ff88a027175ecb2d9e4f12c9d7
Status: Image is up to date for appropriate/curl:latest
docker.io/appropriate/curl:latest

This feels strange too me... Specially because it's an automated build image.