What
The message shown when commits contain files that look like credentials (passwords, keys and similar), which sync will not carry, has new wording. It now suggests removing those files from the commits by amending them (editing the latest commit) or rebasing (rewriting earlier commits).
When the branch can be pushed, it adds "or push this branch first if the commits belong on origin".
Why
The message now tells you how to get past the block, including the option of pushing to your own remote repository when the commits are meant to be there.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say which sync feature shows this message.