bisect: add "git bisect help" subcommand to get a long usage string

diff --git a/Documentation/git-clone.txt b/Documentation/git-clone.txt
index fdccbd4cbe8fcb336b412d75dc070a5d7b5acb1e..975824301a45bfa297f2ecd5c19e429cb9c86c65 100644 (file)
--- a/Documentation/git-clone.txt
+++ b/Documentation/git-clone.txt
@@ -62,6 +62,15 @@ OPTIONS
        .git/objects/info/alternates to share the objects
        with the source repository.  The resulting repository
        starts out without any object of its own.
++
+*NOTE*: this is a possibly dangerous operation; do *not* use
+it unless you understand what it does. If you clone your
+repository using this option, then delete branches in the
+source repository and then run linkgit:git-gc[1] using the
+'--prune' option in the source repository, it may remove
+objects which are referenced by the cloned repository.
+
+
 
 --reference <repository>::
        If the reference repository is on the local machine