Unable to find current origin/master revision in submodule path

Running this in the main repository should do the trick:

git pull --recurse-submodules

According to the other discussion, especially as @Tobu pointed out in his comment over there, if the error persists, it might be needed to first:

remove both the submodule worktree (ext/blah) and the matching folder inside the GIT_DIR (.git/modules/ext/blah)

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Alternatively, you could git checkout the branch from which you want to pull while inside the submodule, and then run a git pull.

Results should be the same.

I faced the same problem. It got solved. the folder in which the submodule would be stored was there. when I deleted the folder manually, it got resolved.