In some cases, we may want to trigger specific origins (not-yet enabled, from a specific
lister...).
Example use case:
```
swh scheduler -C $SWH_CONFIG_FILENAME \
origin send-to-celery \
--policy never_visited_oldest_update_first \
--without-enabled \
--lister-uuid 'b678cfc3-2780-4186-9186-d78a14bd4958' \
--queue oneshot:swh.loader.git.tasks.UpdateGitRepository \
git
```
Related to T3350
Depends on D5809