my back/bi workout looks normally like this

Weighted Chins 3x4-6
BB Rows 3x6-8
Deadlifts 3x8-10
Pulldowns reverse grip 2x20
Cable Rows 2x10-12
BB Curl 4x8-12



but just a moment ago i got information that my gym will be closed till tuesday.

at home ive got only pullup bar. can i still do some decent and stimulating back workout with that? i will be very grateful for any routine