$ git clone --recursive [email protected]:iamazeem/spdlog-vs-zlog.git
Cloning into 'spdlog-vs-zlog'...
The authenticity of host 'github.com (20.207.73.82)' can't be established.
ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'github.com,20.207.73.82' (ECDSA) to the list of known hosts.
[email protected]: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
It might be a config issue on users' systems. But it most probably looks like a permission issue on one of the required repos.