$ git clone -n https://src.fedoraproject.org/rpms/opencv.git /var/lib/mock/f38-build-side-42-init-devel-572523-25923/root/chroot_tmpdir/scmroot/opencv
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-572523-25923/root/chroot_tmpdir/scmroot/opencv'...
$ git fetch origin befc8263360bb315a40f64402470ba738b746d2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opencv
 * [new ref]         befc8263360bb315a40f64402470ba738b746d2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at befc826 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild