Re: [PATCH] treewide: fix various bugs w/ OpenSSL 3+ EVP API

> diff --git a/builtin/fast-import.c b/builtin/fast-import.c
> index 4dbb10aff3..444f41cf8c 100644
> --- a/builtin/fast-import.c
> +++ b/builtin/fast-import.c
> @@ -1102,6 +1102,7 @@ static void stream_blob(uintmax_t len, struct object_id *oidout, uintmax_t mark)
>  		|| (pack_size + PACK_SIZE_THRESHOLD + len) < pack_size)
>  		cycle_packfile();
>  
> +	the_hash_algo->init_fn(&checkpoint.ctx);
>  	hashfile_checkpoint(pack_file, &checkpoint);
>  	offset = checkpoint.offset;
>  
> diff --git a/builtin/index-pack.c b/builtin/index-pack.c
> index 006ffdc9c5..dda94a9f46 100644
> --- a/builtin/index-pack.c
> +++ b/builtin/index-pack.c
> @@ -1166,6 +1166,7 @@ static void parse_pack_objects(unsigned char *hash)
>  	struct ofs_delta_entry *ofs_delta = ofs_deltas;
>  	struct object_id ref_delta_oid;
>  	struct stat st;
> +	git_hash_ctx tmp_ctx;
>  
>  	if (verbose)
>  		progress = start_progress(
> @@ -1202,7 +1203,9 @@ static void parse_pack_objects(unsigned char *hash)
>  
>  	/* Check pack integrity */
>  	flush();
> -	the_hash_algo->final_fn(hash, &input_ctx);
> +	the_hash_algo->init_fn(&tmp_ctx);
> +	the_hash_algo->clone_fn(&tmp_ctx, &input_ctx);
> +	the_hash_algo->final_fn(hash, &tmp_ctx);
>  	if (!hasheq(fill(the_hash_algo->rawsz), hash))
>  		die(_("pack is corrupted (SHA1 mismatch)"));
>  	use(the_hash_algo->rawsz);
> diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
> index 32505255a0..fef7423448 100644
> --- a/builtin/unpack-objects.c
> +++ b/builtin/unpack-objects.c
> @@ -609,6 +609,7 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix UNUSED)
>  {
>  	int i;
>  	struct object_id oid;
> +	git_hash_ctx tmp_ctx;
>  
>  	disable_replace_refs();
>  
> @@ -669,7 +670,9 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix UNUSED)
>  	the_hash_algo->init_fn(&ctx);
>  	unpack_all();
>  	the_hash_algo->update_fn(&ctx, buffer, offset);
> -	the_hash_algo->final_oid_fn(&oid, &ctx);
> +	the_hash_algo->init_fn(&tmp_ctx);
> +	the_hash_algo->clone_fn(&tmp_ctx, &ctx);
> +	the_hash_algo->final_oid_fn(&oid, &tmp_ctx);
>  	if (strict) {
>  		write_rest();
>  		if (fsck_finish(&fsck_options))
> diff --git a/bulk-checkin.c b/bulk-checkin.c
> index 73bff3a23d..92b9c8598b 100644
> --- a/bulk-checkin.c
> +++ b/bulk-checkin.c
> @@ -268,6 +268,7 @@ static int deflate_to_pack(struct bulk_checkin_packfile *state,
>  					  type, size);
>  	the_hash_algo->init_fn(&ctx);
>  	the_hash_algo->update_fn(&ctx, obuf, header_len);
> +	the_hash_algo->init_fn(&checkpoint.ctx);
>  
>  	/* Note: idx is non-NULL when we are writing */
>  	if ((flags & HASH_WRITE_OBJECT) != 0)
> diff --git a/csum-file.c b/csum-file.c
> index cd01713244..870748e016 100644
> --- a/csum-file.c
> +++ b/csum-file.c
> @@ -207,7 +207,7 @@ int hashfile_truncate(struct hashfile *f, struct hashfile_checkpoint *checkpoint
>  	    lseek(f->fd, offset, SEEK_SET) != offset)
>  		return -1;
>  	f->total = offset;
> -	f->ctx = checkpoint->ctx;
> +	the_hash_algo->clone_fn(&f->ctx, &checkpoint->ctx);
>  	f->offset = 0; /* hashflush() was called in checkpoint */
>  	return 0;
>  }