Bitcoin core gives wrong previous Tx
671d52454812a73517aac8b8d0aeff82a81dc1a493f84fdcfa6273e930fa6288 is the txid while 0c47b3981a84eed8032fe87f7909da1c95fb35adcb8ba533c24712589487ca49 is the wtxid. wtxid was introduced with segwit. For more info check BIP141