Sourcegraph is super useful when browsing through code and dependencies, there is currently no plugin for emacs, but it is pretty easy to configure git-link to do the trick as @sqs pointed out to me on Twitter.
This is all the configuration to make git-link work as expected, and it should be pretty generic.
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|;; using https://github.com/jwiegley/use-package and https://github.com/sshaw/git-link|
|;; in the git config of the repository setup the following|
|;; remote = mysourcegraph.sourcegraph|
|;; [remote "mysourcegraph.sourcegraph"]|
|;; url = https://my.sourcegraph.host/my.git.host/myrespository|
|(defun git-link-sourcegraph (hostname dirname filename _branch commit start end)|
|(let ((line-or-range (if end (format "%s-%s" start end) start)))|
|(defun git-link-commit-sourcegraph (hostname dirname commit)|
|(add-to-list 'git-link-remote-alist '("sourcegraph" git-link-sourcegraph))|
|(add-to-list 'git-link-commit-remote-alist '("sourcegraph" git-link-commit-sourcegraph))|
|(setq git-link-open-in-browser 't))|