$ git clone -n https://src.fedoraproject.org/rpms/kf5-kplotting.git /var/lib/mock/f45-build-14900-465/root/chroot_tmpdir/scmroot/kf5-kplotting
Cloning into '/var/lib/mock/f45-build-14900-465/root/chroot_tmpdir/scmroot/kf5-kplotting'...
$ git fetch origin 3bbeb8091ff8b091293338b0a8e702617844648e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kplotting
 * [new ref]         3bbeb8091ff8b091293338b0a8e702617844648e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bbeb80 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild