metapackageprecisely means that this package does not contain any code, only the composer.json metadata, and so Composer does not even try to download the code
php bin/satis build satis.json public，trigger this error
Loading composer repositories with package information
Installing dependencies from lock file
Package operations: 1 install, 0 updates, 0 removals
Installing erply/pdo (0.2.0): Cloning 68c13d0fdb
Failed to execute git clone --no-checkout 'email@example.com/project/whatever
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.