Error only with gitlab-ci. Works on the command line

HEAD is now at f93667e adjust paths for kernel modules, now in standard location.

fatal: remote error: upload-pack: not our ref 9690853ec650e23649f7eb0faede3580d7defefb

fatal: the remote end hung up unexpectedly

Fetched in submodule path ‘xxxxxx’, but it did not contain 9690853ec650e23649f7eb0faede3580d7defefb. Direct fetching of that commit failed.