[Paraview] Error: git submodule update

[Grant Mc Auley]

I am trying to install paraview using git following the Unix-like
instructions at
http://paraview.org/Wiki/ParaView:Build_And_Install#Checkout_Development_Version_from_git
.
 All this works fine (although I had to use 'http' protocol to clone):

Prepare directory for download
 # mkdir $HOME/projects
 # cd $HOME/projects

To download the source code
 # git clone git://paraview.org/ParaView.git ParaView
 # cd ParaView
 # git checkout -b trunk origin/master
 # git submodule init


However, when I try the next step (git update submodules), I see this:

zzz at zzz:~/code/ParaView$ git submodule update
fatal: Needed a single revision
Unable to find current revision in submodule path 'ThirdParty/IceT/vtkicet'

At first I thought it was an access issue, and changed the 'git' protocol
to 'http' in the .gitmodules file, but I still see the same message.

Any help would be appreciated.
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