$ git clone -n https://src.fedoraproject.org/rpms/kf6-kiconthemes.git /var/lib/mock/f40-build-775092-128012/root/chroot_tmpdir/scmroot/kf6-kiconthemes
Cloning into '/var/lib/mock/f40-build-775092-128012/root/chroot_tmpdir/scmroot/kf6-kiconthemes'...
$ git fetch origin 816a6c825b5f8302bbc88f7f9c74bad217cf3bcb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kiconthemes
 * [new ref]         816a6c825b5f8302bbc88f7f9c74bad217cf3bcb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 816a6c8 5.248.0