I work in a repo with hundreds of very active contributors and thousands of branches. In order to speed up fetches, I have my .git/config only fetch master branches and those that match start with my username
.git/config:
...
[remote "origin"]
url = git@github.com:XXX/XXX.git
fetch = +refs/heads/master:refs/remotes/origin/master
fetch = +refs/heads/nroman-*:refs/remotes/origin/nroman-*
...
Running the command GitHub: View (master) errors out with error: fatal: Invalid refspec '+refs/heads/nroman-*:refs/remotes/origin/nroman-*'
plugin version 1.2.2