Remediating diverged branch by abort merge undoing fetched changes and renaming local branch

abortMergeUndoFetchRenamebranch.sh

# abort merge with diverged remote branch
git merge --abort

# https://stackoverflow.com/questions/6591213/how-do-i-rename-a-local-git-branch
# rename local branch
git branch -m tutorial

# https://stackoverflow.com/questions/35591887/how-to-undo-git-fetch
# discard fetched changes
git remote remove origin

# reattach origin
git remote add origin <URI>