$ hg init t
$ cd t
$ echo content > file
$ hg add file
$ hg qnew -f test.patch
$ hg status
$ cat .hg/patches/test.patch
diff --git a/file b/file
new file mode 100644
--- /dev/null
+++ b/file
@@ -0,0 +1,1 @@
+content
$ hg qapplied
test.patch
$ hg qpop
patch queue now empty
$ hg status
$ hg qpush
applying test.patch
now at: test.patch
$ hg status
A file
$ cat .hg/patches/test.patch
diff --git a/file b/file
new file mode 100644
--- /dev/null
+++ b/file
@@ -0,0 +1,1 @@
+content
$ hg qrefresh
$ hg status
$ cat .hg/patches/test.patch
diff --git a/file b/file
new file mode 100644
--- /dev/null
+++ b/file
@@ -0,0 +1,1 @@
+content