вспомогательные программы для взаимодействия с удаленными репозиториями (Helper programs to interact with remote repositories)
Вызов (Invocation)
Remote helper programs are invoked with one or (optionally) two
arguments. The first argument specifies a remote repository as in
Git; it is either the name of a configured remote or a URL. The
second argument specifies a URL; it is usually of the form
<transport>://<address>, but any arbitrary string is possible.
The GIT_DIR environment variable is set up for the remote helper
and can be used to determine where to store additional data or
from which directory to invoke auxiliary Git commands.
When Git encounters a URL of the form <transport>://<address>,
where <transport> is a protocol that it cannot handle natively,
it automatically invokes git remote-<transport> with the full URL
as the second argument. If such a URL is encountered directly on
the command line, the first argument is the same as the second,
and if it is encountered in a configured remote, the first
argument is the name of that remote.
A URL of the form <transport>::<address> explicitly instructs Git
to invoke git remote-<transport> with <address> as the second
argument. If such a URL is encountered directly on the command
line, the first argument is <address>, and if it is encountered
in a configured remote, the first argument is the name of that
remote.
Additionally, when a configured remote has remote.<name>.vcs set
to <transport>, Git explicitly invokes git remote-<transport>
with <name> as the first argument. If set, the second argument is
remote.<name>.url; otherwise, the second argument is omitted.
