p = SilentPopen(['git', 'checkout', '-f', rev], cwd=self.local)
if p.returncode != 0:
raise VCSException("Git checkout of '%s' failed" % rev, p.output)
p = SilentPopen(['git', 'checkout', '-f', rev], cwd=self.local)
if p.returncode != 0:
raise VCSException("Git checkout of '%s' failed" % rev, p.output)