diff -r acf9f778e048 -r b0dd39b91e7a mercurial/cext/base85.c
--- a/mercurial/cext/base85.c	Sun Feb 20 16:13:57 2022 -0700
+++ b/mercurial/cext/base85.c	Sun Feb 20 16:09:02 2022 -0700
@@ -38,7 +38,7 @@
 	unsigned int acc, val, ch;
 	int pad = 0;
 
-	if (!PyArg_ParseTuple(args, PY23("s#|i", "y#|i"), &text, &len, &pad)) {
+	if (!PyArg_ParseTuple(args, "y#|i", &text, &len, &pad)) {
 		return NULL;
 	}
 
@@ -90,7 +90,7 @@
 	int c;
 	unsigned int acc;
 
-	if (!PyArg_ParseTuple(args, PY23("s#", "y#"), &text, &len)) {
+	if (!PyArg_ParseTuple(args, "y#", &text, &len)) {
 		return NULL;
 	}