$ git clone -n https://src.fedoraproject.org/rpms/opencv.git /var/lib/mock/f40-build-2318270-58239/root/chroot_tmpdir/scmroot/opencv
Cloning into '/var/lib/mock/f40-build-2318270-58239/root/chroot_tmpdir/scmroot/opencv'...
$ git fetch origin 057fbf10b86050ecb647cfa566d8b24e4c32170e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opencv
 * [new ref]         057fbf10b86050ecb647cfa566d8b24e4c32170e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 057fbf1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild