How do I mark translation strings as non-customized? Drupal 8 distinguishes between "customized" and "non-customized" translations.

A customized translation is a translation that has been imported from a module and then changed at /admin/config/regional/translate.

So, if I edit a translation that has been imported, it becomes customized.

What if I edited many translations, but then changed my mind and wanted to restore them to the default?

How can I revert a customized string into the original non-customized one?  (And is it possible to do this to strings in batches?)
Based on 4k4's suggestion, I was able to do this with SQL:

drush sqlq &lt; "UPDATE mydb.locales_target SET customized = 0 WHERE customized = 1;"


Warning: This will unset the customized flag for all strings on your site, but leave the customized translations in place.  This is what I wanted, but make sure it's what you want too before running the command.  Always make a backup, etc.