Re: [PATCH v2] sequencer: ensure labels that are object IDs are rewritten

> When writing the todo script for --rebase-merges, we try to find a label
> for certain commits.  If the label ends up being a valid object ID, such
> as when we merge a detached commit, we want to rewrite it so it is no
> longer a valid object ID.
> 
> However, the code path that does this checks for its length to be
> equivalent to GIT_SHA1_RAWSZ, which isn't correct, since what we are
> reading is a hex object ID.  Instead, check for the length being
> equivalent to that of a hex object ID.  Use the_hash_algo so this code
> works regardless of the hash size.
> 
> Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>