$ git clone -n https://src.fedoraproject.org/rpms/kf6-kiconthemes.git /var/lib/mock/f40-build-788140-135049/root/chroot_tmpdir/scmroot/kf6-kiconthemes
Cloning into '/var/lib/mock/f40-build-788140-135049/root/chroot_tmpdir/scmroot/kf6-kiconthemes'...
$ git fetch origin cd6520eedd50fdf71e6ce032d5a4312480993bcb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kiconthemes
 * [new ref]         cd6520eedd50fdf71e6ce032d5a4312480993bcb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd6520e 6.0.0