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GIT-PATCH-ID(1)                                  Git Manual                                  GIT-PATCH-ID(1)



NAME
       git-patch-id - Compute unique ID for a patch

SYNOPSIS
       git patch-id < <patch>


DESCRIPTION
       A "patch ID" is nothing but a SHA-1 of the diff associated with a patch, with whitespace and line
       numbers ignored. As such, it's "reasonably stable", but at the same time also reasonably unique,
       i.e., two patches that have the same "patch ID" are almost guaranteed to be the same thing.

       IOW, you can use this thing to look for likely duplicate commits.

       When dealing with git diff-tree output, it takes advantage of the fact that the patch is prefixed
       with the object name of the commit, and outputs two 40-byte hexadecimal strings. The first string is
       the patch ID, and the second string is the commit ID. This can be used to make a mapping from patch
       ID to commit ID.

OPTIONS
       <patch>
           The diff to create the ID of.

GIT
       Part of the git(1) suite



Git 1.8.3                                        05/24/2013                                  GIT-PATCH-ID(1)