def is_fq(name):
    return name.startswith('refs/')
Tries to get xcode_settings.setting from spec. Assumes that the setting
dataset/ETHPy150Open bloomberg/phabricator-tools/py/phl/phlgitu_ref.py/is_fq--crossover with--dataset/ETHPy150Open adblockplus/gyp/pylib/gyp/xcode_emulation.py/XcodeSettings.GetPerTargetSetting