Failed to fetch repo with CM Repo Sync manifest

<?xml version="1.0" encoding="UTF-8"?>
<manifest>

  <remote name="moto-vendor-p" fetch="https://github.com/TheMuppets/proprietary_vendor_motorola.git" />

  <project path="vendor/motorola" name="proprietary_vendor_motorola" remote="moto-vendor-p" revision="cm-12.1"/>

</manifest>