UPDATE: this feature is available since 2016.3 version.
VCS | Git | Remotes | Add (Alt+Insert).
Original answer:
You can choose from the existing remotes, but you can’t add new remotes from the UI, there is a feature request:
- IDEA-87099 Provide ability to add remote repositories to local git repository
The workaround, for those new to Git is to use the commandline and add a remote like so:
git remote add remoteName remoteUrl
After that, the remote will show up in the pull dialog in Intellij, but it won’t show any branches until you do a fetch, like so:
git fetch remoteName