git - Check out latest master branch after current branch is merged into it by another user -

let's have single master branch , push new code feature-a branch, sub-branch master:

• • feature-a
• master

now have feature-a branch checked out.

later different person merges feature-a master , closes feature-a branch:

• master (merged feature-a)
• • feature-a
• master

but sourcetree stuck old feature-a branch , have resort using reset --hard move latest master commit , rid of feature-a references.

is there way make process more streamlined? ideally script/simple button sequence automatically move latest master commit,

the key thing remember here feature-a has been merged master, feature-a has not been updated. therefore feature-a still - middle commit in second diagram.

if reset --hard, you're forcing feature-a branch point master, isn't has happened in remote repository.

instead want checkout master , continue working; or perhaps create new feature branch starting @ master.