Problem with clone hanging

[Bryan O'Sullivan <bos@serpentine.com>]

I am trying to clone a repository as follows:

  git clone git://www.mellanox.co.il/~git/infiniband

This makes a tiny bit of progress, and then hangs, without ever printing
any output.

Upon doing an strace to figure out what might be going on, I see this:

     <...much activity...>
        28261 write(3, "0032want 8ba130df4b67fa40878ccf80d54615132d24bc68\n", 50) = 50
        28261 write(3, "0032want 7df8ea909888d4856d3aff1c41192739d715a393\n", 50) = 50
        28261 write(3, "0000", 4)               = 4
        28261 write(3, "0009done\n", 9)         = 9
        28261 read(3, "0008", 4)                = 4
        28261 read(3, "NAK\n", 4)               = 4
        28261 gettimeofday({1154968213, 166810}, NULL) = 0
        28261 open("/home/bos/git/ofed_1_1/.git/objects/pack/tmp-ZbzARk", O_RDWR|O_CREAT
        |O_EXCL, 0600) = 4
        28261 gettimeofday({1154968213, 167511}, NULL) = 0
        28261 read(3, ...
     <...HANG>

>From which I conclude that the server is telling the client to go away,
which the client is for some reason ignoring.

Not being a habitual git user, I don't know where to go from here.  I'm
using the latest git, cloned and built as of today.  Help!

	<b