rm -f "$GIT_DIR/rebased-patches"
git format-patch -k --stdout --full-index --ignore-if-in-upstream \
- --src-prefix=a/ --dst-prefix=b/ \
- --no-renames $root_flag "$revisions" >"$GIT_DIR/rebased-patches"
+ --src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \
+ $root_flag "$revisions" >"$GIT_DIR/rebased-patches"
ret=$?
if test 0 != $ret