diff -up rpmdevtools-8.10/rpmdev-checksig.orig rpmdevtools-8.10/rpmdev-checksig
--- rpmdevtools-8.10/rpmdev-checksig.orig	2020-06-29 10:29:43.936758775 +0200
+++ rpmdevtools-8.10/rpmdev-checksig	2020-06-29 10:29:55.540983848 +0200
@@ -44,8 +44,8 @@ def lookupKeyID(ts, keyid):
     mi.pattern('version', rpm.RPMMIRE_STRCMP, keyid)
     for hdr in mi:
         sum = hdr['summary']
-        mo = re.search(b'\<.*\>', sum)
-        email = mo.group().decode(errors='replace')
+        mo = re.search('\<.*\>', sum)
+        email = mo.group()
         return email
 
 
diff -up rpmdevtools-8.10/rpmdev-rmdevelrpms.py.orig rpmdevtools-8.10/rpmdev-rmdevelrpms.py
--- rpmdevtools-8.10/rpmdev-rmdevelrpms.py.orig	2020-06-29 10:28:59.503896990 +0200
+++ rpmdevtools-8.10/rpmdev-rmdevelrpms.py	2020-06-29 10:29:09.897098576 +0200
@@ -42,8 +42,8 @@ dev_re = re.compile("-(?:de(?:buginfo|ve
 test_re = re.compile("^perl-(?:Devel|ExtUtils|Test)-")
 lib_re1 = re.compile("^lib.+")
 lib_re2 = re.compile("-libs?$")
-a_re = re.compile(b"\\w\\.a$")
-so_re = re.compile(b"\\w\\.so(?:\\.\\d+)*$")
+a_re = re.compile("\\w\\.a$")
+so_re = re.compile("\\w\\.so(?:\\.\\d+)*$")
 comp_re = re.compile("^compat-gcc")
 # required by Ant, which is required by Eclipse...
 jdev_re = re.compile("^java-.+-gcj-compat-devel$")