$ git clone -n https://src.fedoraproject.org/rpms/perl-Wx-Perl-DataWalker.git /var/lib/mock/f45-build-27406-624/root/chroot_tmpdir/scmroot/perl-Wx-Perl-DataWalker
Cloning into '/var/lib/mock/f45-build-27406-624/root/chroot_tmpdir/scmroot/perl-Wx-Perl-DataWalker'...
$ git fetch origin 26f2cf5008042defc0aeed208239c318c9835c56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Wx-Perl-DataWalker
 * [new ref]         26f2cf5008042defc0aeed208239c318c9835c56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26f2cf5 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild