git-tag, git-fetch: add example for fetching tags (#1128)

pages/common/git-fetch.md

@@ -2,10 +2,14 @@
 
 > Download objects and refs from a remote repository.
 
-- Fetch new branches and update remote-tracking branches:
+- Fetch new branches from upstream, and update local remote-tracking branches:
 
 `git fetch {{remote_name}}`
 
 - Fetch the latest changes from all remote git servers:
 
 `git fetch --all`
+
+- Also fetch tags from the remote repository:
+
+`git fetch --tags`

pages/common/git-tag.md

@@ -18,3 +18,7 @@
 - Delete the tag with the given name:
 
 `git tag -d {{tag_name}}`
+
+- Get updated tags from upstream:
+
+`git fetch --tags`