bzr unable create lightweight checkout in the root of shared repo

For some reason I'd like to put some supporting scripts in the root of my shared repo. And I want to keep these scripts under version control. Unfortunately, I can't create lightweight checkout in the shared repository root. bzr gives me FileExists error:

bzr arguments: [u'co', u'--lightweight', u'tools', u'.']
looking for plugins in C:\work\Bazaar\plugins-repo
looking for plugins in C:\Program Files\Bazaar\lib\library.zip\bzrlib\plugins
Looking for plugins in 'C:\\Program Files\\Bazaar\\lib\\library.zip\\bzrlib\\plugins'
Names in archive: ['__init__.pyc', 'launchpad/__init__.pyc', 'launchpad/account.pyc', 'launchpad/lp_indirect.pyc', 'launchpad/lp
_registration.pyc', 'launchpad/test_account.pyc', 'launchpad/test_lp_indirect.pyc', 'launchpad/test_register.pyc', 'multiparent.
pyc']
Load plugin launchpad from zip 'C:\\Program Files\\Bazaar\\lib\\library.zip\\bzrlib\\plugins'
Load plugin multiparent from zip 'C:\\Program Files\\Bazaar\\lib\\library.zip\\bzrlib\\plugins'
encoding stdout as sys.stdout encoding 'cp1251'
Traceback (most recent call last):
  File "bzrlib\commands.pyc", line 802, in run_bzr_catch_errors
  File "bzrlib\commands.pyc", line 758, in run_bzr
  File "bzrlib\commands.pyc", line 492, in run_argv_aliases
  File "bzrlib\builtins.pyc", line 969, in run
  File "bzrlib\branch.pyc", line 773, in create_checkout
  File "bzrlib\bzrdir.pyc", line 1371, in initialize_on_transport
  File "bzrlib\transport\local.pyc", line 304, in mkdir
  File "bzrlib\transport\local.pyc", line 300, in _mkdir
  File "bzrlib\transport\__init__.pyc", line 351, in _translate_error
FileExists: File exists: u'C:/work/MyCode/BJT.new/_repo.1/.bzr': [Error 183] Невозможно создать файл,: u'C:/work/MyCode/BJT.new/_repo.1/.bzr'