$ git clone -n https://src.fedoraproject.org/rpms/perl-WWW-GoodData.git /var/lib/mock/f45-build-27403-624/root/chroot_tmpdir/scmroot/perl-WWW-GoodData
Cloning into '/var/lib/mock/f45-build-27403-624/root/chroot_tmpdir/scmroot/perl-WWW-GoodData'...
$ git fetch origin 8224e795a3339321653d043c5c4e64926e3cf68e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-WWW-GoodData
 * [new ref]         8224e795a3339321653d043c5c4e64926e3cf68e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8224e79 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild