diff --git a/poky/scripts/lib/devtool/deploy.py b/poky/scripts/lib/devtool/deploy.py
index 8333225..e14a587 100644
--- a/poky/scripts/lib/devtool/deploy.py
+++ b/poky/scripts/lib/devtool/deploy.py
@@ -170,7 +170,7 @@
             srcdir = recipe_outdir
             recipe_outdir = os.path.join(rd.getVar('WORKDIR'), 'devtool-deploy-target-stripped')
             if os.path.isdir(recipe_outdir):
-                bb.utils.remove(recipe_outdir, True)
+                exec_fakeroot(rd, "rm -rf %s" % recipe_outdir, shell=True)
             exec_fakeroot(rd, "cp -af %s %s" % (os.path.join(srcdir, '.'), recipe_outdir), shell=True)
             os.environ['PATH'] = ':'.join([os.environ['PATH'], rd.getVar('PATH') or ''])
             oe.package.strip_execs(args.recipename, recipe_outdir, rd.getVar('STRIP'), rd.getVar('libdir'),
diff --git a/poky/scripts/lib/devtool/sdk.py b/poky/scripts/lib/devtool/sdk.py
index ae3fc4c..d717b6c 100644
--- a/poky/scripts/lib/devtool/sdk.py
+++ b/poky/scripts/lib/devtool/sdk.py
@@ -207,7 +207,7 @@
         if not sstate_mirrors:
             with open(os.path.join(conf_dir, 'site.conf'), 'a') as f:
                 f.write('SCONF_VERSION = "%s"\n' % site_conf_version)
-                f.write('SSTATE_MIRRORS:append = " file://.* %s/sstate-cache/PATH \\n "\n' % updateserver)
+                f.write('SSTATE_MIRRORS:append = " file://.* %s/sstate-cache/PATH"\n' % updateserver)
     finally:
         shutil.rmtree(tmpsdk_dir)
 
diff --git a/poky/scripts/lib/devtool/upgrade.py b/poky/scripts/lib/devtool/upgrade.py
index 826a3f9..0357ec0 100644
--- a/poky/scripts/lib/devtool/upgrade.py
+++ b/poky/scripts/lib/devtool/upgrade.py
@@ -192,14 +192,15 @@
             get_branch = [x.strip() for x in check_branch.splitlines()]
             # Remove HEAD reference point and drop remote prefix
             get_branch = [x.split('/', 1)[1] for x in get_branch if not x.startswith('origin/HEAD')]
-            if 'master' in get_branch:
-                # If it is master, we do not need to append 'branch=master' as this is default.
-                # Even with the case where get_branch has multiple objects, if 'master' is one
-                # of them, we should default take from 'master'
-                srcbranch = ''
-            elif len(get_branch) == 1:
-                # If 'master' isn't in get_branch and get_branch contains only ONE object, then store result into 'srcbranch'
+            if len(get_branch) == 1:
+                # If srcrev is on only ONE branch, then use that branch
                 srcbranch = get_branch[0]
+            elif 'main' in get_branch:
+                # If srcrev is on multiple branches, then choose 'main' if it is one of them
+                srcbranch = 'main'
+            elif 'master' in get_branch:
+                # Otherwise choose 'master' if it is one of the branches
+                srcbranch = 'master'
             else:
                 # If get_branch contains more than one objects, then display error and exit.
                 mbrch = '\n  ' + '\n  '.join(get_branch)