/home/bee$ env | grep HASH
HASH(0x775090)=

Im not sure how I got this, but how do i unset/remove this from env?

/home/btidev$ unset HASH(0x775090)
-bash: syntax error near unexpected token `('
/home/btidev$ unset 'HASH(0x775090)'
-bash: unset: `HASH(0x775090)': not a valid identifier
/home/btidev$ unset HASH\(0x775090\)
-bash: unset: `HASH(0x775090)': not a valid identifier