doc: trivial typo in git-format-patch.txt

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 98f1779cf3241fa12300fbf3dc0c4eff8ab10b61..86b2ff1e07614846465109dcb4b9afed11013839 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -404,7 +404,7 @@ while read commit parents; do
        then
                tree=$(git write-tree)
        else
-               tree="$commit^{tree}"
+               tree=$(git rev-parse "$commit^{tree}")
        fi
        workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
                "$tree" $parentstr < ../message > ../map/$commit ||