title: UnicodeDecodeError while syncing android source using repo
body: <p>Why am I facing the following error while fetching?</p>
  
  <pre><code>error: Cannot fetch LineageOS/android_build (UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 37: ordinal not in range(128))
  Fetching project platform/hardware/intel/audio_media
  Exception in thread Thread-140:
  Traceback (most recent call last):
    File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
      self.run()
    File "/usr/lib/python2.7/threading.py", line 754, in run
      self.__target(*self.__args, **self.__kwargs)
    File "/media/chirag/SSD/android/system/.repo/repo/subcmds/sync.py", line 270, in _FetchProjectList
      success = self._FetchHelper(opt, project, *args, **kwargs)
    File "/media/chirag/SSD/android/system/.repo/repo/subcmds/sync.py", line 314, in _FetchHelper
      prune=opt.prune)
    File "/media/chirag/SSD/android/system/.repo/repo/project.py", line 1271, in Sync_NetworkHalf
      self._InitMRef()
    File "/media/chirag/SSD/android/system/.repo/repo/project.py", line 2364, in _InitMRef
      self._InitAnyMRef(R_M + self.manifest.branch)
    File "/media/chirag/SSD/android/system/.repo/repo/project.py", line 2370, in _InitAnyMRef
      cur = self.bare_ref.symref(ref)
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 57, in symref
      self._EnsureLoaded()
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 64, in _EnsureLoaded
      self._LoadAll()
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 85, in _LoadAll
      self._ReadLoose('refs/')
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 133, in _ReadLoose
      self._ReadLoose(prefix + name + '/')
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 133, in _ReadLoose
      self._ReadLoose(prefix + name + '/')
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 137, in _ReadLoose
      self._ReadLoose1(p, prefix + name)
    File "/media/chirag/SSD/android/system/.repo/repo/git_refs.py", line 155, in _ReadLoose1
      ref_id = ref_id.decode()
  UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 37: ordinal not in range(128)
  
  Fetching projects:  27% (158/584)  Fetching project LineageOS/android_hardware_qcom_display
  Fetching projects:  28% (164/584)  Fetching project LineageOS/android_hardware_qcom_display
  Fetching project LineageOS/android_hardware_qcom_display
  
  error: Exited sync due to fetch errors
  </code></pre>
  
  <p>What particular folder should I delete to fetch that folder again? I have tried deleting <code>android/system/build</code> but it turned out to be a futile attempt.</p>