$ git clone -n https://src.fedoraproject.org/rpms/kf6-breeze-icons.git /var/lib/mock/f42-build-863212-171512/root/chroot_tmpdir/scmroot/kf6-breeze-icons
Cloning into '/var/lib/mock/f42-build-863212-171512/root/chroot_tmpdir/scmroot/kf6-breeze-icons'...
$ git fetch origin 99da9bf5c5adc303a3b56a3f043f3558a4103eb4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-breeze-icons
 * [new ref]         99da9bf5c5adc303a3b56a3f043f3558a4103eb4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99da9bf Frameworks 6.9