$ git clone -n https://src.fedoraproject.org/rpms/mininet.git /var/lib/mock/f39-build-1667213-40808/root/chroot_tmpdir/scmroot/mininet
Cloning into '/var/lib/mock/f39-build-1667213-40808/root/chroot_tmpdir/scmroot/mininet'...
$ git fetch origin 81a8bbc06a8520d0c99a54a84ea40e7386630906:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mininet
 * [new ref]         81a8bbc06a8520d0c99a54a84ea40e7386630906 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81a8bbc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild