acid: source: Only record commit hashes

Previously, the object hash computed by `git for-each-ref` was the value
we cached in the 'previous_hash' file.  If the matching ref was an
annotated tag, then this was the tag's hash, not the commit hash it
pointed to.

Now, always dereference tags to their commit object, and store this
value instead.  This consistency will improve the web UX in my opinion.

Signed-off-by: Malfurious <m@lfurio.us>

0 files changed, 0 insertions, 0 deletions