Before launching the beta I committed changes, created a new branch in Xcode 6 for the beta, did a push to remote repository and got a success message, and then opened the project in the Xcode 7 beta. After allowing Swift to update a few things that have changed (in my case, some sorting closures), I saved and committed changes, then received this error:
The remote repository could not be found
Make sure a valid repository exists at the specified location and try again.
With this error, I quit the Beta, re-opened, and did a pull from the remote (which worked fine), then made one change, committed changes, and attempted a push to remote, which failed with the same error ... I could pull from it, but not push to it?
MBA (mid-2013), 8 GB RAM 256 GB SSD
Xcode 7 beta (7A120f)
Mac OS X 10.10.3
Remote is running over the network, via SSH, on an iMac (and I have had no problems pushing/pulling from XCode 6.3.2)