[Pkg-bazaar-maint] Bug#656963: git clone bzr::<anything> dies with "ValueError: unable to map ref refs/heads back to tag name"

[Jonathan Nieder]

Package: bzr-git
Version: 0.6.6-1
Severity: important
Tags: upstream fixed-upstream

Trying to clone anything, after all the fetching is done, I get

	Traceback (most recent call last):
	  File "/usr/lib/git-core/git-remote-bzr", line 220, in <module>
	    commands[argv[0]](argv, shortname, remote_dir)
	  File "/usr/lib/git-core/git-remote-bzr", line 89, in cmd_list
	    for ref, git_sha1 in refs.as_dict().iteritems():
	  File "/usr/lib/python2.7/dist-packages/dulwich/repo.py", line 202, in as_dict
	    ret[key] = self[("%s/%s" % (base, key)).strip("/")]
	  File "/usr/lib/python2.7/dist-packages/dulwich/repo.py", line 273, in __getitem__
	    _, sha = self._follow(name)
	  File "/usr/lib/python2.7/dist-packages/dulwich/repo.py", line 255, in _follow
	    contents = self.read_ref(refname)
	  File "/usr/lib/python2.7/dist-packages/dulwich/repo.py", line 231, in read_ref
	    contents = self.read_loose_ref(refname)
	  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/git/refs.py", line 129, in read_loose_ref
	    tag_name = ref_to_tag_name(ref)
	  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/git/refs.py", line 89, in ref_to_tag_name
	    raise ValueError("unable to map ref %s back to tag name" % ref)
	ValueError: unable to map ref refs/heads back to tag name
	$ echo $?
	128

and the repo is gone.  Version 0.6.6+bzr1560 works, though (phew).

 $ dpkg-query -W bzr python-dulwich python-tdb git
 bzr	2.5.0~beta5-2
 git	1:1.7.9~rc2-1
 python-dulwich	0.8.3-1~jrn
 python-tdb	1.2.9-4+b1