Some origins are listed as urls while they are not. They are possibly vcs. So this
commit tries to detect and and deal with those if possible. If not possible, they are
skipped.
Related to T3781
Related to P1470
The end goal is to ingest sparsely the origins, that would avoid hitting the various
servers around the same time for colocated origins in the upstream manifest (especially
file or tarball).
Related to T3781
