Gitea is a nice alternative to GitHub, easy to setup. When using it as a mirror from GitHub, you might want all repositories created in GitHub to appear automatically in Gitea.

go build -o github-mirror

• Generate a GitHub Personal Access Token
• Generate a Gitea Access Token from https://GITEA_SERVER/user/settings/applications

cat > config.yaml <<EOF
GitHub:
  PersonalToken: GITHUB_PERSONAL_ACCESS_TOKEN
Gitea:
  ServerURL: https://GITEA_SERVER
  PersonalToken: GITEA_ACCESS_TOKEN
EOF

./github-mirror config.yaml

In a crontab, you can add the LogFile directive to config.yaml to collect logs over multiple runs.