Link-local address change in Blackhole routing

Hi I am aware that IPv4 next-hop / IPv6 next-hop global can be achieved by changing bgp_next_hop when Blackhole Community is applied. I believe that if we notify the next-hop of only global, the link-local in the FIB will remain the same as the peer's address even though the RIB has changed, resulting in unintended behavior, and I believe that the link-local address needs to be changed. Is it possible to change the link-local address in Bird?