The two-point correlation function covariance with fewer mocks. - Trusov, Svyatoslav; Zarrouk, Pauline; Cole, Shaun; Norberg, Peder; Zhao, Cheng; Aguilar, Jessica Nicole; Ahlen, Steven; Brooks, David; de la Macorra, Axel; Doel, Peter; Font-Ribera, Andreu; Honscheid, Klaus; et al. (Monthly Notices of the Royal Astronomical Society, 2024)