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Trouble in setting up qt libraries in emerge

Hi! I am Gaurav Kumar, a student applying for Gsoc 2016.
I was trying to set up emerge on windows in order to build an executable of Kstars (my gsoc project),
in this document , while trying to setup qt I am stuck on the step wherein I download qt libraries and install it
the command :
emerge qt ;
the error :
emerge error: SHA1 hash for file C:\k\download\svn-win32-1.8.8-1.zip (e9b72154fcd3fdd28c23a3ee64d33ba1a08714b0) does not  match (917f34143b259d8f03a9860a5c5996ba6943abc6)

here k is the directory in which emerge exists.
Please help.