$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-Measure.git /var/lib/mock/f45-build-22413-591/root/chroot_tmpdir/scmroot/perl-Class-Measure
Cloning into '/var/lib/mock/f45-build-22413-591/root/chroot_tmpdir/scmroot/perl-Class-Measure'...
$ git fetch origin 4046243d4dfa6176dff405ab6e0089a84466a35d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-Measure
 * [new ref]         4046243d4dfa6176dff405ab6e0089a84466a35d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4046243 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild