def update_mirrors(self, ref, oldsha, newsha, except_mirrors = [], suppress_stderr = False):
'''Update the <ref> from <oldsha> to <newsha> on all mirrors. The update must already have happened locally.'''
def update_mirrors(self, ref, oldsha, newsha, except_mirrors = [], suppress_stderr = False):
'''Update the <ref> from <oldsha> to <newsha> on all mirrors. The update must already have happened locally.'''