Obtaining read group information from the fastq files

I have fastq files with headers
@SN963:294:C847FACXX:1:1106:1077:2087 1:N:0:AGGCAGAA (File name -DYP26_blood_S3_L001_R1_001.fastq)
and
@SN963:294:C847FACXX:1:1106:1077:2087 2:N:0:AGGCAGAA (File name- DYP26_blood_S3_L001_R2_001.fastq)
these are pairs of the same sample.
But, I need read group information for analyzing using GATK, which I don't have. how do I get the read group to include in the BWA step.