Retrieve FASTA files for SGB genomes

How can I obtain the FASTA files for the genomes comprising SGBs? :smile:
I ran MetaPhlAn v4.02 with the Oct22 DB on a set of metagenomes, which identified multiple SGBs as abundant in my samples. I would like to conduct further analysis on these SGBs, but I require access to their genomic FASTA files.
It would be greatly appreciated if I could obtain these sequences.