- retval = get_sha1_hex(target, sha1);
- if (retval)
- return retval;
- retval = make_sure_we_have_it(commitS, sha1);
- if (retval)
- return retval;
- memcpy(current_commit_sha1, sha1, 20);
- return process_commit(sha1);
+ int fd = -1;
+
+ if (write_ref && current_ref) {
+ fd = lock_ref_sha1(write_ref, current_ref);
+ if (fd < 0)
+ return -1;
+ }
+
+ if (interpret_target(target, sha1))
+ return error("Could not interpret %s as something to pull",
+ target);
+ if (process_commit(sha1))
+ return -1;
+
+ if (write_ref) {
+ if (current_ref) {
+ write_ref_sha1(write_ref, fd, sha1);
+ } else {
+ write_ref_sha1_unlocked(write_ref, sha1);
+ }
+ }
+ return 0;