Commit access is still only granted by the bot. As Michael said.
As Antonio approved it, I just granted casz commit access to the plugin. As usual, the invitation must be accepted first so it takes effect.
[23:16] <+ batmat> | jenkins-admin: hello old friend
[23:16] <@jenkins-adm> | Hello batmat!
[23:17] <+ batmat> | jenkins-admin: make casz committer on bitbucket-branch-source-plugin
[23:17] <@jenkins-adm> | Added casz as a GitHub committer for repository bitbucket-branch-source-plugin
[23:17] <+ batmat> | jenkins-admin
Filing a PR as described by Antonio is going to be needed to if Joseph wants to be able to also release.