$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-PlanePath.git /var/lib/mock/f45-build-24715-605/root/chroot_tmpdir/scmroot/perl-Math-PlanePath
Cloning into '/var/lib/mock/f45-build-24715-605/root/chroot_tmpdir/scmroot/perl-Math-PlanePath'...
$ git fetch origin 71c41deb5edebcc51bcd4a019d5620371b4efa0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-PlanePath
 * [new ref]         71c41deb5edebcc51bcd4a019d5620371b4efa0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71c41de Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild