My project disappeared when I renamed it in git

I was putting the finishing touches on a project. One of those “finishing touches” was renaming the project. Now it’s “gone”. ??. I looked on GitHub and it’s still “there”, but I’m in over my head in terms of how to get my master and my renamed branch to interact properly. Here’s how I got to this dreadful state:

I followed Apple’s How to Rename a Project post:

In git, from the command line, I checked out a branch to rename the project as follows:

git checkout -b rename-project

When I was done, I typed:

git add .
git commit -m "Renamed my project"

Then, I went back to the master to merge the ‘rename-project` branch as follows:

git checkout master

Project /Users/me/Documents/Developer/My Renamed Project.xcodeproj cannot be opened because it is missing its project.pbxproj file.

How do I get my 2 weeks’ work back?

Git Baby is a git and github fan, let's start git clone.