From: Ping Yin <pkufranky@gmail.com>
Date: Fri, 26 Sep 2008 15:33:23 +0000 (+0800)
Subject: git-submodule: Fix "Unable to checkout" for the initial 'update'
X-Git-Tag: v1.6.0.3~58
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=b9b378a001d35a64a30a652a45f8084ee2be6cdf;p=git.git

git-submodule: Fix "Unable to checkout" for the initial 'update'

Since commit 55218("checkout: do not lose staged removal"), in
cmd_add/cmd_update, "git checkout <commit>" following
"git clone -n" may fail if <commit> is different from HEAD.

So Use "git checkout -f <commit>" to fix this.

Signed-off-by: Ping Yin <pkufranky@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---

diff --git a/git-submodule.sh b/git-submodule.sh
index b40f876a2..5888735e4 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -185,7 +185,7 @@ cmd_add()
 	else
 
 		module_clone "$path" "$realrepo" || exit
-		(unset GIT_DIR; cd "$path" && git checkout -q ${branch:+-b "$branch" "origin/$branch"}) ||
+		(unset GIT_DIR; cd "$path" && git checkout -f -q ${branch:+-b "$branch" "origin/$branch"}) ||
 		die "Unable to checkout submodule '$path'"
 	fi
 
@@ -311,8 +311,13 @@ cmd_update()
 
 		if test "$subsha1" != "$sha1"
 		then
+			force=
+			if test -z "$subsha1"
+			then
+				force="-f"
+			fi
 			(unset GIT_DIR; cd "$path" && git-fetch &&
-				git-checkout -q "$sha1") ||
+				git-checkout $force -q "$sha1") ||
 			die "Unable to checkout '$sha1' in submodule path '$path'"
 
 			say "Submodule path '$path': checked out '$sha1'"