$ git clone -n https://src.fedoraproject.org/rpms/perl-CPAN-Uploader.git /var/lib/mock/f45-build-22078-589/root/chroot_tmpdir/scmroot/perl-CPAN-Uploader
Cloning into '/var/lib/mock/f45-build-22078-589/root/chroot_tmpdir/scmroot/perl-CPAN-Uploader'...
$ git fetch origin 84f0248f44dab4b20a940720716d079a073b9398:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CPAN-Uploader
 * [new ref]         84f0248f44dab4b20a940720716d079a073b9398 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84f0248 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild