[Users] Git: "index pack failure" checking out Noether?

Hi all.

I'm only just getting around to checking out the Noether release of ET, and I'm hitting a problem I haven't seen before. All the Git-hosted arrangements are failing on checkout, because "fatal: index-pack failed". Has anyone seen this? A tiny bit of Googling indicates this might be a server-side issue, rather than on my client's end, but since this involves at least two different serves, I suspect the problem is on my end.

Can anyone help/advise? The version of Git installed on this machine is "1.8.5.2".

Thanks,

Bernard

P.S. I ran again with --verbose (and without --parallel), but it wasn't much more informative.