$ git clone -n https://src.fedoraproject.org/rpms/kf6-kiconthemes.git /var/lib/mock/f41-build-860188-168834/root/chroot_tmpdir/scmroot/kf6-kiconthemes
Cloning into '/var/lib/mock/f41-build-860188-168834/root/chroot_tmpdir/scmroot/kf6-kiconthemes'...
$ git fetch origin 6e2e6758f55ad178ffe892a6aff1a3a66637bdbc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kiconthemes
 * [new ref]         6e2e6758f55ad178ffe892a6aff1a3a66637bdbc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e2e675 6.7.0