If from the examination before the judge it appears that the person held is the person charged with having committed the crime alleged and, except in cases arising under section 629.06, that the accused has fled from justice, the judge must, by a warrant reciting the accusation, commit the accused to the county jail for a time, not exceeding 30 days and specified in the warrant, as will enable the arrest of the accused to be made under a warrant of the governor on a requisition of the executive authority of the state having jurisdiction of the offense, unless the accused gives bail as provided in section 629.16, or until the accused is legally discharged.