Check the size of a github repo before downloading

check_github_repo_size

# http://webapps.stackexchange.com/questions/39587/view-estimated-size-of-github-repository-before-cloning
# tested on macOS
echo https://github.com/torvalds/linux.git | perl -ne 'print $1 if m!([^/]+/[^/]+?)(?:\.git)?$!' | xargs -I{} curl -s -k https://api.github.com/repos/'{}' | grep size

# output: 
# "size": 1746294,

For private repositories:

curl -s -H "Authorization: token <GITHUB_TOKEN>" https://api.github.com/repos/torvalds/linux | jq '.size' | numfmt --to=iec --from-unit=1024

Result:
3.3G