Morton was signed from Bristol Inner City Academy at the age of 14.
Chippenham manager Mark Collier said: “James is highly-rated at City. He will be initially joining us on a month’s loan. With Matt Smith injured, with James Guthrie suspended and Scott Donnelly departed the club it was important that I ensured competition for shirts remained paramount.”
Morton will be in the matchday squad against high-flying Chelmsford City today.