$ git clone -n https://src.fedoraproject.org/rpms/kf6-kplotting.git /var/lib/mock/f42-build-side-1-3504345-45983/root/chroot_tmpdir/scmroot/kf6-kplotting
Cloning into '/var/lib/mock/f42-build-side-1-3504345-45983/root/chroot_tmpdir/scmroot/kf6-kplotting'...
$ git fetch origin 6a9990a5169ed0e240c78ae8ae7f0a31d7d31dd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kplotting
 * [new ref]         6a9990a5169ed0e240c78ae8ae7f0a31d7d31dd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a9990a 6.13.0