How can I get all symbolic names from a Git commit hash?

Question

If a Git commit hash has multiple tags associated with it and/or is the head of multiple branches, is there a good way to list all of them?

I've looked through the options to git name-rev, git describe, and git symbolic-ref but haven't found any options that seem to do what I want. Frustratingly, git name-rev has a --tags option to list only tags but no apparent mechanism to list only branches (and git name-rev always seems to prefer tags over branches for me anyway).

$ git checkout -b branch1 $ git checkout -b branch2 $ git tag tag1 $ git tag tag2 $ git name-rev HEAD HEAD tags/tag1 $ git describe --all HEAD HEAD tags/tag1 $ git symbolic-ref HEAD refs/heads/branch2

To map a commit hash to all of its symbolic names, will I need to run git tag --list and git branch --all --list and then run git rev-parse on all of the results?

ErikMD · Accepted Answer · 2020-06-21 22:06:17Z

It should be possible to achieve what you want thanks to the git for-each-ref command:

git for-each-ref --points-at=HEAD

Complete example session:

$ git init $ touch a $ git add a $ git commit -m a [master (root-commit) eb3222d] a 1 file changed, 0 insertions(+), 0 deletions(-) create mode 100644 a $ git checkout -b branch1 Switched to a new branch 'branch1' $ git checkout -b branch2 Switched to a new branch 'branch2' $ git tag tag1 $ git tag tag2 $ git tag -a tag3 -m "annotated tag" $ git for-each-ref --points-at=HEAD eb3222db1821633a54ccd0a6434e883c4cb71b98 commit refs/heads/branch1 eb3222db1821633a54ccd0a6434e883c4cb71b98 commit refs/heads/branch2 eb3222db1821633a54ccd0a6434e883c4cb71b98 commit refs/heads/master eb3222db1821633a54ccd0a6434e883c4cb71b98 commit refs/tags/tag1 eb3222db1821633a54ccd0a6434e883c4cb71b98 commit refs/tags/tag2 0dbba96f519c2ad1b470f97171230004addff896 tag refs/tags/tag3

jamesdlin · Accepted Answer · 2020-06-22 02:47:45Z

I realized that normally git log shows me all of the names that I'm looking for. Looking at git log's formatting options, I alternatively could use:

$ git log --format='%d -1 HEAD (HEAD -> branch2, tag: tag2, tag: tag1, branch1)

The formatting of the output from ErikMD's git for-each-ref suggestion probably is easier to deal with though, so that's likely what I'll end up using.

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How can I get all symbolic names from a Git commit hash?

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