```plaintext
git clone <repo> [<dir>]
```
where `<repo>` may be:

```plaintext
ssh://[user@]host.xz[:port]/path/to/repo.git/
git://host.xz[:port]/path/to/repo.git/
http[s]://host.xz[:port]/path/to/repo.git/
ftp[s]://host.xz[:port]/path/to/repo.git/
[user@]host.xz:path/to/repo.git/             # alternative scp syntax for ssh
```