capistrano deploy:update_code git error

capistrano deploy:update_code git error

# sometims capistranos fails executing update_code goal:
  * 2013-06-17 08:08:34 executing `deploy:update_code'
    executing locally: "git ls-remote . HEAD"
    command finished in 9ms
  * refreshing local cache to revision f4db at /var/folders/nc/pl0c_dnd43bb6xl5ljdfh5zh0012gn/T/proj
    executing locally: cd /var/folders/nc/pl0c_dnd43bb6xl5ljdfh5zh0012gn/T/proj && git fetch -q origin && git fetch --tags -q origin && git reset -q --hard f4db8ab10f23ddd2864ebfeee7486bdf3bd8e423 && git clean -q -d -x -f
fatal: Not a git repository (or any of the parent directories): .git

# to reset your local cache folder execute following commands:
rm -rf /var/folders/*
reopen bash

thanks