Well, I figured out my issue. I had created backup files manifest.scm and channels.scm and put them in the ~/.config/guix directory for storage. Turns out that these files, or at least the channels one, get read and used automatically by `guix pull`.  I have moved those files to a different directory for storage and backup, and now everything seems fine. 

Turns out the commit that `guix pull` was stuck on was the one defined in my channels.scm file.

If anyone else experiences the same issue, perhaps this will help.

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