Re: [PATCH 2/5] refs: make `is_pseudoref_syntax()` stricter

Karthik Nayak [off-list ref] writes:

Given this, I think for the next version, I'll do the following changes:
1. keep `is_pseudoref_syntax()` as is.
2. introduce `is_pseudoref()` which calls `is_pseudoref_syntax()` and
also checks the content of the file.
3. replace use of `is_pseudoref_syntax()` with `is_pseudoref()` in this
patch series.

The content check in 2. was something that was mentioned in an
earlier discussion, lack of which I completely missed during the
review of this current round.  Sounds very good to add that.

Thanks.