import sys
import tempfile
-from bup import git, options, vfs
+from bup import git, options
from bup.helpers import handle_ctrl_c, log, readpipe, saved_errors, unlink
import bup.path
bup = bup.path.exe()
git.check_repo_or_die()
-top = vfs.RefList(None)
tmpdir = tempfile.mkdtemp(prefix='bup-import-dup-')
try: