$ git clone -n https://src.fedoraproject.org/rpms/perl-Git-CPAN-Patch.git /var/lib/mock/f40-build-2017603-46328/root/chroot_tmpdir/scmroot/perl-Git-CPAN-Patch
Cloning into '/var/lib/mock/f40-build-2017603-46328/root/chroot_tmpdir/scmroot/perl-Git-CPAN-Patch'...
$ git fetch origin 7d7add3f23fa62c8658096d3938b372d1e1991e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Git-CPAN-Patch
 * [new ref]         7d7add3f23fa62c8658096d3938b372d1e1991e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d7add3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild