git log abc123^..abc123
shows the commits that got merged into merge-commit abc123
.
Create a git
alias log-merge
for easy reuse:
$ git config --global alias.log-merge \
'!f() { git log --stat "$1^..$1"; }; f'
$ git log-merge abc123
For a one-line version:
$ git config --global alias.log-merge-short \
'!f() { git log --pretty=oneline "$1^..$1"; }; f'