$ git clone -n https://src.fedoraproject.org/rpms/freemarker.git /var/lib/mock/f42-build-3436188-45433/root/chroot_tmpdir/scmroot/freemarker
Cloning into '/var/lib/mock/f42-build-3436188-45433/root/chroot_tmpdir/scmroot/freemarker'...
$ git fetch origin e3c86b3ed93f04253615e864d3f89588714d516c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freemarker
 * [new ref]         e3c86b3ed93f04253615e864d3f89588714d516c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3c86b3 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild