could not find a branch named 'gfm' in https://github.com/apple/swift-cmark.git

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I created a new project and did not make any changes to the initialization.

Then I added the swift-markdown package(File -> Add Packages... -> Github), but it did not work. It gave me an error saying: could not find a branch named ‘gfm’ in https://github.com/apple/swift-cmark.git.

I am a Swift beginner and I don’t know if I need to provide any other information, so I tried to show all the settings, maybe they are not crucial.

What should I do? I appreciate any help from you guys.