检查提交是否合并到另一个分支，如果是，那么合并提交是什么？

Question

Suppose a git repo has two branches, master and test . commitA is made on the test branch. I want to check:

1. Whether commitA has been merged to the master branch?
2. If so, what is the SHA of the merge commit?

I want to check these programmatically (not by using gitk ).

Answer 1

There's a tool called git-when-merged that was designed exactly for this use-case. After installing it,

git when-merged commitA master

should do the trick.

Answer 2

By your example, the branch test is now at commit commitA . So you can check where commitA has been merged into master by this command:

git branch --contains test

This should list all branches that contains commitA , check to see if master is in the list.

For getting the SHA of commitA type:

git rev-parse test

The SHA of the merge commit and the commitA itself are the same.