gas@Trusty-Tahr:~$ repo sync
Traceback (most recent call last):
  File "/home/gas/.repo/repo/main.py", line 408, in <module>
    _Main(sys.argv[1:])
  File "/home/gas/.repo/repo/main.py", line 384, in _Main
    result = repo._Run(argv) or 0
  File "/home/gas/.repo/repo/main.py", line 127, in _Run
    copts, cargs = cmd.OptionParser.parse_args(argv)
  File "/home/gas/.repo/repo/command.py", line 67, in OptionParser
    self._Options(self._optparse)
  File "/home/gas/.repo/repo/subcmds/sync.py", line 163, in _Options
    self.jobs = self.manifest.default.sync_j
  File "/home/gas/.repo/repo/manifest_xml.py", line 314, in default
    self._Load()
  File "/home/gas/.repo/repo/manifest_xml.py", line 354, in _Load
    b = m.GetBranch(m.CurrentBranch).merge
  File "/home/gas/.repo/repo/project.py", line 590, in CurrentBranch
    b = self.work_git.GetHead()
  File "/home/gas/.repo/repo/project.py", line 2265, in GetHead
    raise NoManifestException(path)
error.NoManifestException: /home/gas/.repo/manifests/.git/HEAD
gas@Trusty-Tahr:~$ repo sync
Traceback (most recent call last):
  File "/home/gas/.repo/repo/main.py", line 408, in <module>
    _Main(sys.argv[1:])
  File "/home/gas/.repo/repo/main.py", line 384, in _Main
    result = repo._Run(argv) or 0
  File "/home/gas/.repo/repo/main.py", line 127, in _Run
    copts, cargs = cmd.OptionParser.parse_args(argv)
  File "/home/gas/.repo/repo/command.py", line 67, in OptionParser
    self._Options(self._optparse)
  File "/home/gas/.repo/repo/subcmds/sync.py", line 163, in _Options
    self.jobs = self.manifest.default.sync_j
  File "/home/gas/.repo/repo/manifest_xml.py", line 314, in default
    self._Load()
  File "/home/gas/.repo/repo/manifest_xml.py", line 354, in _Load
    b = m.GetBranch(m.CurrentBranch).merge
  File "/home/gas/.repo/repo/project.py", line 590, in CurrentBranch
    b = self.work_git.GetHead()
  File "/home/gas/.repo/repo/project.py", line 2265, in GetHead
    raise NoManifestException(path)
error.NoManifestException: /home/gas/.repo/manifests/.git/HEAD
gas@Trusty-Tahr:~$