git-hgでgit clone/pull時にエラー

Cygwinで発生し、Debian jessieでは発生しなかった。

Traceback (most recent call last):
  File "/user/git-hg/fast-export/hg-fast-export.py", line 405, in <module>
    options.statusfile,authors=a,sob=options.sob,force=options.force))
  File "/user/git-hg/fast-export/hg-fast-export.py", line 339, in hg2git
    c=export_commit(ui,repo,rev,old_marks,max,c,authors,sob,brmap)
  File "/user/git-hg/fast-export/hg-fast-export.py", line 222, in export_commit
    export_file_contents(ctx,man,changed)
  File "/user/git-hg/fast-export/hg-fast-export.py", line 133, in export_file_contents
    wr(d)
  File "/user/git-hg/fast-export/hg-fast-export.py", line 34, in wr
    sys.stdout.write(msg)
IOError: [Errno 32] Broken pipe

git-hgの使ってるfast-exportのバージョンを上げて、解決
commit f2491e83b038a27bc4a64a34b4bccb557734ab3a:NG
commit d202200fd9daa75cdb37d4cf067d4ca00e269535:OK
詳細未調査。