diff --git a/sha1_file.c b/sha1_file.c
index e13bd2c..adc4018 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -2744,20 +2744,75 @@ void *read_object_with_reference(const unsigned char *sha1,
 	}
 }

+static int inc_ascii_buf(unsigned char * buf, unsigned long len);
 static void write_sha1_file_prepare(const void *buf, unsigned long len,
                                     const char *type, unsigned char *sha1,
                                     char *hdr, int *hdrlen)
 {
 	git_SHA_CTX c;
+	git_SHA_CTX t;

 	/* Generate the header */
 	*hdrlen = sprintf(hdr, "%s %lu", type, len)+1;

+
+	/* CHANGES
+	   len - 11 to len -1 is the scratch zone.
+	   this is where the desired hash is found.
+	 */
+	/* first diff_len bytes of sha1sum must be 0.*/
+	unsigned long diff_len = 4;
+	unsigned long i = 0;
+	unsigned char* b2 = (char*) buf;
+
+
 	/* Sha1.. */
 	git_SHA1_Init(&c);
 	git_SHA1_Update(&c, hdr, *hdrlen);
-	git_SHA1_Update(&c, buf, len);
-	git_SHA1_Final(sha1, &c);
+	git_SHA1_Update(&c, buf, len - 11);
+	t = c;
+	while (1) {
+	  if (0==i%100) {
+	    //printf("iter %d %s" , i, (char*) (buf + len - 11));
+	  }
+	  int j = 0;
+	  unsigned char x = 0;
+	  git_SHA1_Update(&c, buf + len - 11, 11);
+	  git_SHA1_Final(sha1, &c);
+	  for (; j < diff_len; j++) {
+	    x = x | sha1[j];
+	  }
+	  if (0 == x) {
+	    FILE *f = fopen("body_fixed.txt", "w");
+	    fputs(buf, f);
+	    fclose(f);
+	    break;}
+	  else {
+	    // reset.
+	    c = t;
+	    // increment scratch buf.
+	    if (1==inc_ascii_buf(b2 + len - 11, 10)) {
+	      break; // failure.
+	    }
+	  }
+	  i++;
+      }
+}
+
+static int inc_ascii_buf(unsigned char * buf, unsigned long len) {
+  /* returns 1 = maxed out. */
+  unsigned char min = 48;
+  unsigned char max = 122;
+  int x;
+  for (x = 0; x < len; x++) {
+    if (buf[x] == max) {
+      buf[x] = min;
+    } else {
+      buf[x]++;
+      return 0;
+    }
+  }
+  return 1;
 }

 /*