Symbolic 'references' in Git?

Folks;

We want a way to have our Bamboo configuration utilize a symbol to refer to 'latest release' 'latest patch' etc. in Git, rather than having to go in and change the actual branch name every time we ship a release and create a new one.

We thought about using something like:

git symbolic-ref -m'new next-release branch build for Bamboo' next-release release-3.15

However, this symbolic ref is only local to one repository, and we want it to be global across all of Bamboo.

Rather than resorting to manually copying the symbolic ref file around, from repo to repo, is there any way to make such a symbolic 'variable' global?

Thanks! -Chris