$ git clone -n https://src.fedoraproject.org/rpms/perl-Perl-Tidy-Sweetened.git /var/lib/mock/f45-build-25805-613/root/chroot_tmpdir/scmroot/perl-Perl-Tidy-Sweetened
Cloning into '/var/lib/mock/f45-build-25805-613/root/chroot_tmpdir/scmroot/perl-Perl-Tidy-Sweetened'...
$ git fetch origin 6f103fbd866b0feb58e51d51afd1e9a53dc762b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perl-Tidy-Sweetened
 * [new ref]         6f103fbd866b0feb58e51d51afd1e9a53dc762b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6f103fb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild