[task] Pull Request Summarization from Diffs

[jon-tow]

🚀 The Task

Given the commit diffs for a pull request, the model should be able to summarize the changes made by the source contributor.

Example

Summarize a pull request for the following diffs:

diff --git a/file.py b/file.py
index ...
--- a/file.py
+++ b/file.py
- print("hello world!")
+ print("HELLO WORLD!")

Additional Notes

Reference: What The Diff