gentoo-overlay/app-mobilephone/adb-sync/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <!-- maintainer-needed -->
  <upstream>
    <bugs-to>https://github.com/google/adb-sync/issues</bugs-to>
    <remote-id type="github">google/adb-sync</remote-id>
  </upstream>
  <use>
    <flag name="channel">Install the adb-channel script</flag>
  </use>
</pkgmetadata>