$ git clone -n https://src.fedoraproject.org/rpms/caffe.git /var/lib/mock/f40-build-797422-141347/root/chroot_tmpdir/scmroot/caffe
Cloning into '/var/lib/mock/f40-build-797422-141347/root/chroot_tmpdir/scmroot/caffe'...
$ git fetch origin 2564bc6694d693b7a9ced0e4ab0be3c8a0197e8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/caffe
 * [new ref]         2564bc6694d693b7a9ced0e4ab0be3c8a0197e8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2564bc6 Rebuild for opencv 4.9.0