git remote changed for cap deploy git branch issue

cap deploy terminal session

✈ > cap deploy
    triggering load callbacks
  * executing `qa'
    triggering start callbacks for `deploy'
  * executing `multistage:ensure'
  * executing `deploy'
  * executing `deploy:update'
 ** transaction: start
  * executing `deploy:update_code'
    executing locally: "git ls-remote rails@qa.xyz.org:/git/xyz.git qa"
    command finished in 2025ms
  * executing "git clone -q git@bitbucket.org:user/xyz.git /srv/abc_qa/releases/20120422235632 && cd /srv/abc_qa/releases/20120422235632 && git checkout -q -b deploy 37e19fc08d93a2682b5209dd33ead083e28da6b8 && (echo 37e19fc08d93a2682b5209dd33ead083e28da6b8 > /srv/xyz_qa/releases/20120422235632/REVISION)"
    servers: ["qa.xyz.org"]
    [qa.xyz.org] executing command
 ** [qa.xyz.org :: err] git checkout: updating paths is incompatible with switching branches/forcing
 ** Did you intend to checkout '37e19fc08d93a2682b5209dd33ead083e28da6b8' which can not be resolved as commit?
    command finished in 32356ms
*** [deploy:update_code] rolling back
  * executing "rm -rf /srv/abc_qa/releases/20120422235632; true"
    servers: ["qa.xyz.org"]
    [qa.xyz.org] executing command
    command finished in 135ms
failed: "sh -c 'git clone -q git@bitbucket.org:user/xyz.git /srv/abc_qa/releases/20120422235632 && cd /srv/abc_qa/releases/20120422235632 && git checkout -q -b deploy 37e19fc08d93a2682b5209dd33ead083e28da6b8 && (echo 37e19fc08d93a2682b5209dd33ead083e28da6b8 > /srv/abc_qa/releases/20120422235632/REVISION)'" on qa.xyz.org

deploy.rb

et :default_stage, "qa"
require 'capistrano/ext/multistage'

set :application, "abc"
set :repository,  "git@bitbucket.org:user/xyz.git"
set :local_repository, "rails@qa.xyz.org:/git/abc.git"
set :scm, :git
set :scm_user, "git"

desc <<-DESC
  Symlinks database.yml file from shared directory into the latest release
DESC
task :symlink_shared, :roles => [:app, :db] do
  run "ln -s #{shared_path}/database.yml #{latest_release}/config/database.yml"
  run "ln -s #{shared_path}/config.yml #{latest_release}/config/config.yml"
  run "ln -s #{shared_path}/development.sqlite3 #{latest_release}/db/development.sqlite3"
end

after 'deploy:finalize_update', :symlink_shared

namespace :deploy do
  desc "Restart Application"
  task :restart, :roles => :app do
    run "touch #{current_path}/tmp/restart.txt"
  end

  [:start, :stop].each do |t|
    desc "#{t} task is a no-op with mod_rails"
    task t, :roles => :app do ; end
  end
end

namespace :delayed_job do
  desc "Start delayed_job process"
  task :start, :roles => :app do
    run "cd #{current_path}; script/delayed_job start #{rails_env}"
  end

  desc "Stop delayed_job process"
  task :stop, :roles => :app do
    run "cd #{current_path}; script/delayed_job stop #{rails_env}"
  end

  desc "Restart delayed_job process"
  task :restart, :roles => :app do
    run "cd #{current_path}; script/delayed_job restart #{rails_env}"
  end
end

after "deploy:start", "delayed_job:start"
after "deploy:stop", "delayed_job:stop"
after "deploy:restart", "delayed_job:restart"