He's trying to amend my commit in core: https://gerrit.wikimedia.org/r/c/mediawiki/core/+/530914

I was able to push to contentTranslation
https://gerrit.wikimedia.org/r/#/c/mediawiki/extensions/ContentTranslation/+/531473/

I do not see any push in that link, just a patch proposed in Gerrit?

but can't push to core

What does that mean? That there is no "+2" button under "Reply..."? Or something else?

Also see https://phabricator.wikimedia.org/tag/mediawiki-gerrit-group-requests/

I do not see any push in that link, just a patch proposed in Gerrit?

I was able to create a branch and push code to contentTranslation

What does that mean? That there is no "+2" button under "Reply..."? Or something else?

I don't know what +2 is, I just want to be able to push code to a repo, at the moment when I try to git review on core I get

➜  core git:(review/zfilipin/T230729) git review
remote:
remote: Processing changes: refs: 1
remote: Processing changes: refs: 1, done
To ssh://gerrit.wikimedia.org:29418/mediawiki/core
 ! [remote rejected]       HEAD -> refs/for/master%topic=T230729 (cannot add patch set to 530914.)
error: failed to push some refs to 'ssh://jpita@gerrit.wikimedia.org:29418/mediawiki/core'

Note that https://www.mediawiki.org/wiki/Gerrit/Tutorial#Amending_a_change_.28your_own_or_someone_else.27s.29 asks to use git review -R for amending instead of git review. Looks like this is about amending and related to [addPatchSet](https://gerrit-review.googlesource.com/Documentation/access-control.html#category_add_patch_set), hence changing task summary.

The ability to add a patchset is restricted in Gerrit. The configuration is done in All-Projects.git: https://gerrit.wikimedia.org/r/#/admin/projects/All-Projects,access which has:

So one has to be a member of one of those groups to be able to add a patchset.

@Jpita is a member of:

$ ssh -p 29418 gerrit.wikimedia.org gerrit ls-groups --user Jpita
extension-CleanChanges
extension-ContentTranslation
language-team
LoginUsers

So we have to add the user to Trusted-Contributors which can be done at https://gerrit.wikimedia.org/r/#/admin/groups/1505,members