$ git clone -n https://src.fedoraproject.org/rpms/jflex.git /var/lib/mock/f40-build-2346043-59990/root/chroot_tmpdir/scmroot/jflex
Cloning into '/var/lib/mock/f40-build-2346043-59990/root/chroot_tmpdir/scmroot/jflex'...
$ git fetch origin fe9bf0752d83dda33cbd767bb4372790fc47f08f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jflex
 * [new ref]         fe9bf0752d83dda33cbd767bb4372790fc47f08f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe9bf07 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild