mercurial.error.RepoLookupError on git-hg clone

[DrMcCoy]

I'm trying to git-hg clone https://bitbucket.org/kosovan/theunarchiver, but an error is raised:

Initialized empty Git repository in /home/drmccoy/fork/theunarchiver/.git/
requesting all changes
adding changesets
adding manifests
adding file changes
added 1168 changesets with 8230 changes to 2477 files (+2 heads)                                              
new changesets 966693f01ae4:048dd23b998a
(sent 3 HTTP requests and 1386 bytes; received 23114108 bytes in responses)
Initialized empty Git repository in /home/drmccoy/fork/theunarchiver/.git/hgremote/
Traceback (most recent call last):
  File "/usr/local/lib/git-hg/fast-export/hg-fast-export.py", line 405, in <module>
    options.statusfile,authors=a,sob=options.sob,force=options.force))
  File "/usr/local/lib/git-hg/fast-export/hg-fast-export.py", line 318, in hg2git
    if not verify_heads(ui,repo,heads_cache,force):
  File "/usr/local/lib/git-hg/fast-export/hg-fast-export.py", line 299, in verify_heads
    (_,_,_,_,_,_,branch,_)=get_changeset(ui,repo,h)
  File "/usr/local/lib64/git-hg/fast-export/hg2git.py", line 71, in get_changeset
    node=repo.lookup(revision)
  File "/usr/lib64/python2.7/site-packages/mercurial/localrepo.py", line 1511, in lookup
    return scmutil.revsymbol(self, key).node()
  File "/usr/lib64/python2.7/site-packages/mercurial/scmutil.py", line 624, in revsymbol
    raise error.RepoLookupError(_("unknown revision '%s'") % symbol)
mercurial.error.RepoLookupError: unknown revision 'Ò;º¶$pSmZTP'