Search the git log from a specific point in time for merge commits from one specific branch into another.

git-merge-since.sh

#!/bin/bash
#
# by: Robert Evans
#
# Git Merge Since Search
#
# I needed to be able to search git history looking for all merge commits from
# a specific repo, into another specific repo, starting at a given point in time.
#
# Example:
#
# This little script accomplishes this. Here is how you'd run it:
#
#                  since date  from     to
#                              branch  branch
#
# git-merge-since "12/20/2013" staging master
#
# The above command would search the git logs, starting at 12/20/2013
# and look for merge commits where staging was merged into the master branch.
#
# The output retains the git log colors and is formatted to look like this:
#
# ac3e00e Merge branch 'staging' into development  Robert Evans, 2 weeks ago
# afa6a8c Merge branch 'staging' into development  Robert Evans, 3 weeks ago
# e45511f Merge branch 'staging' into development  Robert Evans, 3 weeks ago
# a17bd07 Merge branch 'staging' into development  Robert Evans, 3 weeks ago
# 2350546 Merge branch 'staging' into development  Robert Evans, 3 weeks ago
# 6fa3c6b Merge branch 'staging' into development  Robert Evans, 4 weeks ago
#

set -e

date=$1
from_repo=$2
to_repo=$3

search="'$2' into $3"

git log --since="$1" --merges --pretty=format':%C(red)%h%Creset %s %C(green) %an, %ar%Creset' --grep="$search"