Carthage: How to get the very latest version of a given repository?

Question

The Cartfile documentation makes the assertion:

If no version requirement is given, any version of the dependency is allowed.

with t

Answer 1

The documentation states

Carthage supports several kinds of version requirements:

• >= 1.0 for “at least version 1.0”
• ~> 1.0 for “compatible with version 1.0”
• == 1.0 for “exactly version 1.0”
• "some-branch-or-tag-or-commit" for a specific Git object (anything allowed by git rev-parse)

so I believe

github "jspahrsummers/xcconfigs" "HEAD"

should work as expected, since "HEAD" is a valid argument for git rev-parse

Alternatively

github "jspahrsummers/xcconfigs" "master"

or any other branch