$ git clone -n https://src.fedoraproject.org/rpms/lucene.git /var/lib/mock/f39-build-1906974-42871/root/chroot_tmpdir/scmroot/lucene
Cloning into '/var/lib/mock/f39-build-1906974-42871/root/chroot_tmpdir/scmroot/lucene'...
$ git fetch origin 4002b61aa6492e76a33363d5545eb13c778e7932:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lucene
 * [new ref]         4002b61aa6492e76a33363d5545eb13c778e7932 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4002b61 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild