Visual Studio GitHub is linked to a stranger account

Question

I created a new private repository in Visual Studio 2022 (device A) and I commit and pushed every version. Ok so far. When I pulled the project from another PC (device B) I saw that everything I pushed from my device A is displayed from another account!

I have never seen it before, does that mean I got hacked or something? I have no idea I am new to Github and Git.

All commits from my project:

g7501 is my account but the other one is linked to my VS device A somehow!

Can someone tell me if this is okay?

My branches:

Answer 1

Every Git commit has two names attached to it, an "author" and a "committer". These two names each consist of two parts: a given name and an email address. For instance, A U Thor <[email protected]> has a given name of A U Thor and an email address [email protected].

Git stores these two entities into the commit metadata at the time you (or whoever) make the commit. From then on, these can never be changed. Not even Git itself can change them. But when Git creates a new commit, it totally believes whatever you say your user.name (given name) and user.email (email address) settings are, so you can run:

git -c user.name="Fred Flintstone" -c [email protected] commit

for instance to make your next commit be by Fred Flintstone <[email protected]>. (Git will use this as both author and committer.)

If you use Git to examine the commits, you'll see the author line by default in git log output. Use git log --pretty=fuller to see both author and committer. They will generally be the same, since git commit makes them the same; they will differ only if you, for instance, take an emailed patch (via, e.g., git format-patch) from some other author and use git am to turn that patch into a commit. Then the other author will be the author, but you—your user.name and user.email—will be the committer. (There are similar cases that don't involve email, but do involve two different people collaborating, that produce the same effect.)

Again, these cannot be changed after the commit is made. They present as, e.g.:

commit acd34fd5f60ab01e871dfa3a3bb8b81828ac181d
Author:     Ævar Arnfjörð Bjarmason <avarab gmail.com>
AuthorDate: Fri Apr 8 18:00:25 2022 +0200
Commit:     Junio C Hamano <gitster pobox.com>
CommitDate: Fri Apr 8 11:21:11 2022 -0700

(though I've replaced the @ with space to cut down on spam to these guys) when Git shows them to you.

Other programs that are not Git "like" to obscure Git's actual stored information and show you something else instead. For instance, GitHub can show you something else entirely. This has nothing to do with Git! This is done by GitHub, in a way GitHub control. For more about how GitHub do this, see their community blog.

(I do not use Visual Studio and do not know what it does.)