I recently reported a bug in sort headlines which was fixed

in the development version.  However I am using the elpa package in windows,

which only has the latest official release of Aug. 28.

My efforts to install the development version failed.

Is there a straightforward recipe to install the development version?

I have the git-bash toolkit installed (all typical unix tools included), and gnu make etc., but I gather that elpa version uses emacs equivalents of make and install.

Is there a way that I can apply the fix to the release package and then rebuild org using the same method elpa uses?