$ git clone -n https://src.fedoraproject.org/rpms/kf6-kiconthemes.git /var/lib/mock/f40-build-767894-125124/root/chroot_tmpdir/scmroot/kf6-kiconthemes
Cloning into '/var/lib/mock/f40-build-767894-125124/root/chroot_tmpdir/scmroot/kf6-kiconthemes'...
$ git fetch origin 5b6bd96a4bdaaf57056e109ac637f70a440bf383:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kiconthemes
 * [new ref]         5b6bd96a4bdaaf57056e109ac637f70a440bf383 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b6bd96 5.247.0