mkdir package/e2fsprogs/patches/
make package/e2fsprogs-{clean,prepare} V=3 QUILT=1
cd build_mips/e2fsprogs-1.39/
quilt new 100-test.patch
EDITOR=nano quilt edit test.txt
quilt refresh

# check with pop and push if the patch applies cleanly:
quilt pop
quilt push

# check the diffs
quilt diff -z

cd ../../
make package/e2fsprogs-refresh


# the result
ll package/e2fsprogs/patches/