See information on this cycle as part of The Josquin Research Project.
A typical melodic formula commonly used for litanies is quoted in C (call) and T (response) in the passage "Sancta Maria ... intercede pro nobis"
1--k--k--k--l--j-----j--h--j--k--k---4 "Sancta Maria, ora pro nobis." (LU 836)
This motet possibly quotes further pre-existing material, but it can not be linked to any Cantus prius factus with a corresponding text.
Additional concordances in mss. that do not transmit motet cycles: RISM 1539/2, No. 11; RISM 1559/2, No. 11; CH-SGs MS 463 (“Tschudi Liederbuch”); D-B MS Mus. 40021, No. 106, ff. 217v-218r; D-Mbs Mus. MS 19, No. 7, ff. 58v-63r; D-Rp C 120 (“Pernner Codex"), No. 44, ff. 85-86 (untexted); I-Rvat MS Capp. Sist. 26, No. 14, ff. 136v-138r; PL-Wu 5832 (olim 2016), ff. 92v-93r; I-Pc MS A.17, No. 102, ff. 154v-155r.
This motet is the basis of Févin’s parody mass.
See also The Josquin Research Project.