Yes, you can use BackHub to backup GitHub issues. GitHub issues are part of the metadata that BackHub stores in a backup, in addition to the GitHub repository itself.
If you haven’t already, follow the instructions on how to install BackHub. If you want to backup issues from a single repository only, make sure to limit access to that particular repository during the installation process. Once installed, wait until the backup of your GitHub repository containing the GitHub issues you’d like to backup is completed.
If you create a backup, it’s important to test its integrity. After the backup is created, download the metadata and unzip it on your hard drive. A folder with the name “issues” displays. It contains your GitHub issues as JSON files.
You can also restore the metadata to GitHub by starting the restore process, described in this FAQ. The GitHub issues contain various information such as author, assignee and labels of the GitHub issue. For example, search for “title”: and “body”: to quickly find what you are looking for.