Total newbie here, so I apologize in advice for asking dumb questions. I did my best to look through the branchable docs, Google, etc to no avail.
I'm trying to use git-annex to manage my music collection (on Windows). I added and pushed 669 songs to GitLab from my desktop. At this point, my music is on both the first folder and GitLab (worth noting that I still don't know where to find the binaries on GitLab...).

Then just as a test, tried to clone the repo and run git annex sync --content.

I get the following error:
error: dst ref refs/heads/synced/git-annex receives from more than one src.
error: failed to push some refs to ''

I figure it's because the files are both on GitLab and the other folder, but I'm not sure how to proceed.
Would appreciate any help, thanks!