I want to set the null hypothesis for the test of genetic correlation to rg=1.

I can get the P value in addition to the value of the genetic correlation rg by implementing the –rg option in LDSC (LD-score regression). I am aware that this P value is the result of a test with rg=0 as the null hypothesis. I would like to test rg=1 as the null hypothesis. Is there a way to do this?