Delete all the workflow runs for a specific workflow in GitHub Actions (gh-cli)

for-osx.sh

# Install gh-cli https://cli.github.com
# cd to the repo folder
# Replace "ci.yml" with the workflow name you want to delete
# Run this to delete them all (500 runs at a time)

gh run list --json databaseId  -q '.[].databaseId' -w ci.yml --limit 500 |
        xargs -IID -P 15 gh api \
              "repos/$(gh repo view --json nameWithOwner -q .nameWithOwner)/actions/runs/ID" \
              -X DELETE

# Alternatively, run this to find the available workflows interactively:

gh workflow view