Consensus sequence for phased variant calls

Question

[michael.flower.14]

I've got paired end sequencing data from a ~500 bp amplicon. I've aligned the data and called variants using gatk to phase the variants, as follows. The phasing information is now under the PGT tag.

gatk HaplotypeCaller -R $REF -I "$BAM" -O "$DIR"/variants/${SN}_HaplotypeCallerPGT.vcf -ERC GVCF

I now want to output the two phased consensus sequences. I know I can output a phased fasta file like so:

bcftools consensus -p "$PREFIX" -f "$REF" "$PREFIX".vcf.gz > "$DIR"/consensus/${SN}_bwa_consensus.fa

And I can also output the first and second allele calls using the following, but that ignores phasing:

bcftools consensus -p "$PREFIX" -f "$REF" -H 1 "$PREFIX".vcf.gz > "$DIR"/consensus/${SN}_bwa_consensus.a1.fa
bcftools consensus -p "$PREFIX" -f "$REF" -H 2 "$PREFIX".vcf.gz > "$DIR"/consensus/${SN}_bwa_consensus.a2.fa

But how do I get it to pay attention to the phasing in the PGT field?