DIP66 - Multiple alias this

[sighoya]

On Wednesday, 20 March 2019 at 22:11:00 UTC, Mike Franklin wrote:
> On Wednesday, 20 March 2019 at 21:58:46 UTC, sighoya wrote:
>
>> How can I help if I'm not the one creating the PR?
>
> It needs someone willing to adopt the PR and work with 
> reviewers to get it across the finish line.  If you've never 
> worked on DMD before, cloning the DMD, druntime, Phobos, etc. 
> and learning how to build the compiler and run the test suite 
> locally is the first step.
>
> Mike

So I can become a reviewer only, but how can I propose changes to 
be merged into the PR proposer's branch, do I need to clone his 
branch and to create a pull request in hope he accept my changes?