$ git clone -n https://src.fedoraproject.org/rpms/jdom2.git /var/lib/mock/f42-build-3276967-41326/root/chroot_tmpdir/scmroot/jdom2
Cloning into '/var/lib/mock/f42-build-3276967-41326/root/chroot_tmpdir/scmroot/jdom2'...
$ git fetch origin 790c7a6da0a9b1a3da2ec35147ac2bc60b7a8429:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jdom2
 * [new ref]         790c7a6da0a9b1a3da2ec35147ac2bc60b7a8429 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 790c7a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild