How to 'Require' a version on a certain branch

Hello,

I have a question about how to get Require to require a package in a 
certain branch rather than a specific version.

Can I require that a package start with a certain version, but be any 
version within that branch?  For instance, I want to require version 1.1 
and let 1.1, 1.1.0, 1.1.1 satisfy the requirement (but not 1.2, say).

Is this possible?

I know that you can specify a version number in a Require header using '=' 
(e.g., "Require: package = 1.1"), but this specifies an *exact* version 
number.  I also know you can use any version at or after a certain version 
using '>=', but that means 1.2 from the previous example also works, and I 
don't want that.