diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index e799e59544..349f40a020 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -214,7 +214,7 @@ test_expect_success 'filter that does not read is fine' '
 	test_cmp expect actual
 '
 
-test_expect_success EXPENSIVE 'filter large file' '
+test_expect_success EXPENSIVE,!MINGW 'filter large file' '
 	git config filter.largefile.smudge cat &&
 	git config filter.largefile.clean cat &&
 	for i in $(test_seq 1 2048); do printf "%1048576d" 1; done >2GB &&
diff --git a/t/t0027-auto-crlf.sh b/t/t0027-auto-crlf.sh
index 90db54c9f9..6e52195ff7 100755
--- a/t/t0027-auto-crlf.sh
+++ b/t/t0027-auto-crlf.sh
@@ -4,9 +4,9 @@ test_description='CRLF conversion all combinations'
 
 . ./test-lib.sh
 
-if ! test_have_prereq EXPENSIVE
+if ! test_have_prereq EXPENSIVE && ! test_have_prereq MINGW
 then
-	skip_all="EXPENSIVE not set"
+	skip_all="Neither EXPENSIVE nor MINGW set"
 	test_done
 fi
 
diff --git a/t/t0302-credential-store.sh b/t/t0302-credential-store.sh
index 1d8d1f210b..d6b54e8c65 100755
--- a/t/t0302-credential-store.sh
+++ b/t/t0302-credential-store.sh
@@ -37,7 +37,7 @@ helper_test store
 unset XDG_CONFIG_HOME
 
 test_expect_success 'if custom xdg file exists, home and xdg files not created' '
-	test_when_finished "rm -f $HOME/xdg/git/credentials" &&
+	test_when_finished "rm -f \"$HOME/xdg/git/credentials\"" &&
 	test -s "$HOME/xdg/git/credentials" &&
 	test_path_is_missing "$HOME/.git-credentials" &&
 	test_path_is_missing "$HOME/.config/git/credentials"
diff --git a/t/t3900-i18n-commit.sh b/t/t3900-i18n-commit.sh
index 4bf1dbe9c9..4b62fa79b1 100755
--- a/t/t3900-i18n-commit.sh
+++ b/t/t3900-i18n-commit.sh
@@ -40,7 +40,7 @@ test_expect_success 'UTF-16 refused because of NULs' '
 '
 
 test_expect_success 'UTF-8 invalid characters refused' '
-	test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
+	test_when_finished "rm -f \"$HOME/stderr $HOME/invalid\"" &&
 	echo "UTF-8 characters" >F &&
 	printf "Commit message\n\nInvalid surrogate:\355\240\200\n" \
 		>"$HOME/invalid" &&
@@ -49,7 +49,7 @@ test_expect_success 'UTF-8 invalid characters refused' '
 '
 
 test_expect_success 'UTF-8 overlong sequences rejected' '
-	test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
+	test_when_finished "rm -f \"$HOME/stderr $HOME/invalid\"" &&
 	rm -f "$HOME/stderr" "$HOME/invalid" &&
 	echo "UTF-8 overlong" >F &&
 	printf "\340\202\251ommit message\n\nThis is not a space:\300\240\n" \
@@ -59,7 +59,7 @@ test_expect_success 'UTF-8 overlong sequences rejected' '
 '
 
 test_expect_success 'UTF-8 non-characters refused' '
-	test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
+	test_when_finished "rm -f \"$HOME/stderr $HOME/invalid\"" &&
 	echo "UTF-8 non-character 1" >F &&
 	printf "Commit message\n\nNon-character:\364\217\277\276\n" \
 		>"$HOME/invalid" &&
@@ -68,7 +68,7 @@ test_expect_success 'UTF-8 non-characters refused' '
 '
 
 test_expect_success 'UTF-8 non-characters refused' '
-	test_when_finished "rm -f $HOME/stderr $HOME/invalid" &&
+	test_when_finished "rm -f \"$HOME/stderr $HOME/invalid\"" &&
 	echo "UTF-8 non-character 2." >F &&
 	printf "Commit message\n\nNon-character:\357\267\220\n" \
 		>"$HOME/invalid" &&
diff --git a/t/t9020-remote-svn.sh b/t/t9020-remote-svn.sh
index 4d81ba1c2c..7e54d26ced 100755
--- a/t/t9020-remote-svn.sh
+++ b/t/t9020-remote-svn.sh
@@ -12,6 +12,12 @@ then
 	test_done
 fi
 
+if test_have_prereq MINGW
+then
+	skip_all='skipping remote-svn tests for lack of POSIX'
+	test_done
+fi
+
 # Override svnrdump with our simulator
 PATH="$HOME:$PATH"
 export PATH PYTHON_PATH GIT_BUILD_DIR
diff --git a/t/t9350-fast-export.sh b/t/t9350-fast-export.sh
index b5149fde6e..d5fab265cb 100755
--- a/t/t9350-fast-export.sh
+++ b/t/t9350-fast-export.sh
@@ -522,4 +522,15 @@ test_expect_success 'delete refspec' '
 	test_cmp expected actual
 '
 
+cat > expected << EOF
+reset refs/heads/master
+from $(git rev-parse master)
+
+EOF
+
+test_expect_failure 'refs are updated even if no commits need to be exported' '
+	git fast-export master..master > actual &&
+	test_cmp expected actual
+'
+
 test_done