$ git clone -n https://src.fedoraproject.org/rpms/poppler-data.git /var/lib/mock/f40-build-2023877-46941/root/chroot_tmpdir/scmroot/poppler-data
Cloning into '/var/lib/mock/f40-build-2023877-46941/root/chroot_tmpdir/scmroot/poppler-data'...
$ git fetch origin 2e69bcf74d40e7a44de2eecb91473ed4f900b39e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/poppler-data
 * [new ref]         2e69bcf74d40e7a44de2eecb91473ed4f900b39e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2e69bcf Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild