Differences for a certain folder between git branches [duplicate]

Solution 1:

You can use

git diff master..yourbranch path/to/folder

Solution 2:

git diff compares trees (as in hierarchies of source files at two different points in time), so it can't extract the changes done by a certain author. If you want to see what changes a user committed, then you need git log.

Does this solve your need?

git log --author=jdoe oldbranch..newbranch -p -- path/to/subdirectory > myChangesInSubdirectory.patch

This lists each commit done by jdoe between the two commits, printing them as a patch instead of the usual commit summary, limiting only to commits that have changes in the target subdirectory, and redirects the output to a file.