$ git clone -n https://src.fedoraproject.org/rpms/postgresql-jdbc.git /var/lib/mock/f42-build-side-1-3504442-45983/root/chroot_tmpdir/scmroot/postgresql-jdbc
Cloning into '/var/lib/mock/f42-build-side-1-3504442-45983/root/chroot_tmpdir/scmroot/postgresql-jdbc'...
$ git fetch origin ad592a34dc5e0e8603cf81e76e712b6e3fd20a48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/postgresql-jdbc
 * [new ref]         ad592a34dc5e0e8603cf81e76e712b6e3fd20a48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad592a3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild