$ git clone -n https://src.fedoraproject.org/rpms/librdkafka.git /var/lib/mock/f40-build-2008215-45349/root/chroot_tmpdir/scmroot/librdkafka
Cloning into '/var/lib/mock/f40-build-2008215-45349/root/chroot_tmpdir/scmroot/librdkafka'...
$ git fetch origin edd698ea0783152f3bbba6f1b35f33284f8e6f1c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librdkafka
 * [new ref]         edd698ea0783152f3bbba6f1b35f33284f8e6f1c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at edd698e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild