$ git clone -n https://src.fedoraproject.org/rpms/maui-mauikit-pix.git /var/lib/mock/f45-build-18139-510/root/chroot_tmpdir/scmroot/maui-mauikit-pix
Cloning into '/var/lib/mock/f45-build-18139-510/root/chroot_tmpdir/scmroot/maui-mauikit-pix'...
$ git fetch origin 21cae097a4a329fceb78388c3a77f9a637854ace:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maui-mauikit-pix
 * [new ref]         21cae097a4a329fceb78388c3a77f9a637854ace -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21cae09 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild