I've done this too. Let's me create a github repo where "master" is fixed at a known version (to me) and I can clone it to any machine without worrying about r

I've done this too. Let's me create a github repo where "master" is fixed at a known version (to me) and I can clone it to any machine without worrying about remembering a the hash for the tag I want. I can push/pull at will and merge in changes from upstream whenever I desire. Sometimes local changes stay local, sometimes they get pushed out. Github and Bitbucket aren't only for working on code with other people, they also let us consume projects at the rate that we want to consume them.