$ git clone -n https://src.fedoraproject.org/rpms/perl-PerlX-Maybe.git /var/lib/mock/f45-build-25859-613/root/chroot_tmpdir/scmroot/perl-PerlX-Maybe
Cloning into '/var/lib/mock/f45-build-25859-613/root/chroot_tmpdir/scmroot/perl-PerlX-Maybe'...
$ git fetch origin c863c7bec9d29edc935454d60ff3d3f1b7b88e21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PerlX-Maybe
 * [new ref]         c863c7bec9d29edc935454d60ff3d3f1b7b88e21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c863c7b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild