Git LFS "Error downloading object ... (missing)" in CI

The commit contains a valid LFS pointer, but the object it references was never uploaded to the server, so the download returns "missing". The pointer and the stored object are out of sync.

What this error means

git lfs pull or checkout prints "Error downloading object: path (oid): Object does not exist on the server" or "(missing)" and fails to fetch that object.

git-lfs

Error downloading object: data/weights.bin (9f8e7d6):
  [9f8e7d6] Object does not exist on the server or you don't have permissions to access it.
error: failed to fetch some objects

Common causes

The object was never pushed to the remote

A commit landed with the pointer but git lfs push never uploaded the content, for example when a push used --no-verify or LFS was misconfigured at commit time.

The object was pruned or lives in a different remote

A migrated or pruned object, or one stored on a fork, is not present on the remote CI clones from.

How to fix it

Push the missing objects from a machine that has them

On a clone that still holds the content, run git lfs push --all origin.
Confirm the object now resolves with git lfs fsck.
Re-run the CI job so the fetch finds the object.

Terminal

git lfs push --all origin
git lfs fsck

Restore or re-migrate the source content

If no clone has the bytes, the object is lost; recreate the artifact and re-add it via LFS, or restore it from a backup remote.

How to prevent it

Never push with --no-verify, which can skip the LFS upload.
Run git lfs fsck before relying on a remote in CI.
Keep a backup remote for critical large artifacts.