git-name-rev - Find symbolic names for given revs
git name-rev [--tags] [--refs=<pattern>] ( --all | --stdin | <committish>... )
Finds symbolic names suitable for human digestion for revisions given in any format parsable by git rev-parse.
--tagsDo not use branch names, but only tags to name the commits
--refs=<pattern>Only use refs whose names match a given shell pattern.
--allList all commits reachable from all refs
--stdinRead from stdin, append "(<rev_name>)" to all sha1s of nameable commits, and pass to stdout
--name-onlyInstead of printing both the SHA-1 and the name, print only the name. If given with --tags the usual tag prefix of "tags/" is also omitted from the name, matching the output of git-describe more closely.
--no-undefinedDie with error code != 0 when a reference is undefined, instead of printing undefined.
--alwaysShow uniquely abbreviated commit object as fallback.
Given a commit, find out where it is relative to the local refs. Say somebody wrote you about that fantastic commit 33db5f4d9027a10e477ccf054b2c1ab94f74c85a. Of course, you look into the commit, but that only tells you what happened, but not the context.
Enter git name-rev:
% git name-rev 33db5f4d9027a10e477ccf054b2c1ab94f74c85a 33db5f4d9027a10e477ccf054b2c1ab94f74c85a tags/v0.99~940
Now you are wiser, because you know that it happened 940 revisions before v0.99.
Another nice thing you can do is:
% git log | git name-rev --stdin
Part of the git(1) suite
|Git 188.8.131.52||GIT-NAME-REV (1)||11/24/2012|