21.1: fetch commits from remote to build changelog

Author: miermontoto

.gitignore

@@ -5,3 +5,4 @@ target
 firebase-debug.log
 **.report.html
 .vscode
+changelog.json

build-changelog.rb

@@ -36,7 +36,8 @@ def to_json(*a)
 start = Time.now
 
 delim = "¿¿¡¡"
-raw = `git log --pretty=format:"%B||%ad||%H||%an#{delim}" --date=short`
+branch = `git rev-parse --abbrev-ref HEAD`.strip
+raw = `git log origin/#{branch} --pretty=format:"%B||%ad||%H||%an#{delim}" --date=short`
 commits = []
 raw.split(delim).each do |line|
 	commit = Commit.new