I find a lot of answers on how to reference a GitHub issue in a git comment (using the #xxx notation). I'd like to reference a commit in my comment, generating a link to the commit details page?
How can I reference a commit in an issue comment on GitHub?
324.6k Views Asked by LodeRunner AtThere are 5 best solutions below

Answer above is missing an example which might not be obvious (it wasn't to me).
Url could be broken down into parts
https://github.com/liufa/Tuplinator/commit/f36e3c5b3aba23a6c9cf7c01e7485028a23c3811
\_____/\________/ \_______________________________________/
| | |
Account name | Hash of revision
Project name
Hash can be found here (you can click it and will get the url from browser).
Hope this saves you some time.

Just paste the commit referencing link in the comment github automatically mentions the commit on the comment.

If you are trying to reference a commit in another repo than the issue is in, you can prefix the commit short hash with reponame@
.
Suppose your commit is in the repo named dev
, and the GitLab issue is in the repo named test
. You can leave a comment on the issue and reference the commit by dev@e9c11f0a
(where e9c11f0a is the first 8 letters of the sha hash of the commit you want to link to) if that makes sense.

I don't think anyone answered the question as asked, perhaps it wasn't possible a decade ago.
However now, as per the github documentation a hash is not required. It can be done thusly:
Individual account
Username/Repository#
and issue or pull request number
example: for the issue at https://github.com/aUser/user-repo/issues/23
use: aUser/user-repo#26
Organization
Organization_name/Repository#
and issue or pull request number
example: for the issue at https://github.com/an-org/theirproject/issues/1000
use: an-org/theirproject#1000
To reference a commit, simply write its SHA-hash, and it'll automatically get turned into a link.
Or use its prefix
See also: