-When a <tag> is specified, the <tag> fetched from the remote is
-also copied to the local $GIT_DIR/tags/<tag> file. When no
-<head> nor <tag> is specified, and <repository> was specified
-with the short-hand notation (i.e. naming a file under the
-$GIT_DIR/branches directory), the head fetched from the remote
-repository is also copied to the local $GIT_DIR/heads/<repository>
-file.
+The ref names and their object names of fetched refs are stored
+in $GIT_DIR/FETCH_HEAD. This information is left for a later merge
+operation done by "git resolve" or "git octopus".