Hi,
This seems to work
git lfs clone https://huggingface.co/${NEW_ORG}/${MODEL_NAME}
cd ${MODEL_NAME}
git lfs install --skip-smudge --local # --local affects only this clone, try without it
git remote add upstream https://huggingface.co/${ORIGINAL_ORG}/${MODEL_NAME}
git fetch upstrream
git checkout -b temp upstream/main
git rebase main # resolve conflicts if needed and finish rebasing
git lfs pull upstream
git push origin temp
git lfs push --all origin temp
git lfs install --force --local

for reference : how to rebase with git lfs? · Issue #1287 · git-lfs/git-lfs · GitHub