$ git clone -n https://src.fedoraproject.org/rpms/kf5-kjobwidgets.git /var/lib/mock/f45-build-14866-464/root/chroot_tmpdir/scmroot/kf5-kjobwidgets
Cloning into '/var/lib/mock/f45-build-14866-464/root/chroot_tmpdir/scmroot/kf5-kjobwidgets'...
$ git fetch origin 4a5df7fdfcf7cc77c3d2bd3029cfd0934f90a784:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kjobwidgets
 * [new ref]         4a5df7fdfcf7cc77c3d2bd3029cfd0934f90a784 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a5df7f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild