Fix Pantheon Site aliases with a policy file
Pantheon automatically generates Drush site alias files for every site. Â The canonical URI for a site is sometimes not the one you expect. This can return unexpected drush urls for drush uli, and the command line will report back caches were cleared on a "site" you were perhaps not expecting.
It is preferable to not edit the generated file, so that the local copy may be easily updated with a pristine copy any time the set of available sites changes.
Place a policy.drush.inc
 folder in ~/.drush/
 and you will be golden:
policy.drush.inc
<?php /** * Implements hook_drush_sitealias_alter * */ function policy_drush_sitealias_alter(&$alias_record) { if ($alias_record['uri'] == 'www.greenbizintelligence.org') { $alias_record['uri'] = 'www.greenbiz.com'; } if ($alias_record['uri'] == 'new-ee.berkeley.edu') { $alias_record['uri'] = 'new-eecs.berkeley.edu'; } if ($alias_record['uri'] == 'dev-ee.berkeley.edu') { $alias_record['uri'] = 'dev-eecs.berkeley.edu'; } } Â
reference:Â https://pantheon.io/blog/fix-drush-site-aliases-policy-file