Failing clone, was previously working on this machine

[Bill Barry]

running:
hg clone -Uvvv --debug https://u:p@url/repo foldername

It gets to here and then stops:
...
changesets: 614 chunks
add changeset 5cc907e9f407
changesets: 615 chunks
add changeset 0d38f6d56c7b
changesets: 616 chunks
add changeset d32f51a76bbf
changesets: 617 chunks
add changeset c893388f2f9a
adding manifests
manifests: 1/617 chunks (0.16%)

What could be wrong? Various firewall changes have happened but I don't 
know what they are exactly (different dept).