$ git clone -n https://src.fedoraproject.org/rpms/nomacs.git /var/lib/mock/f40-build-794770-139788/root/chroot_tmpdir/scmroot/nomacs
Cloning into '/var/lib/mock/f40-build-794770-139788/root/chroot_tmpdir/scmroot/nomacs'...
$ git fetch origin d5010de1afcb573d0317967c8d4e66273dc94cb1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nomacs
 * [new ref]         d5010de1afcb573d0317967c8d4e66273dc94cb1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5010de Rebuild for opencv 4.9.0