diff --git a/external/breakpad/UnpackedTarball_breakpad.mk b/external/breakpad/UnpackedTarball_breakpad.mk
index eca3d550d0d4..ce553e334251 100644
--- a/external/breakpad/UnpackedTarball_breakpad.mk
+++ b/external/breakpad/UnpackedTarball_breakpad.mk
@@ -19,6 +19,12 @@ $(eval $(call gb_UnpackedTarball_set_tarball,breakpad,$(BREAKPAD_TARBALL)))
 # external/breakpad/SIGSTKSZ.patch upstreamed at
 #  <https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3226470> "Adpat to SIGSTKSZ type
 #  in glibc 2.34":
+
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,breakpad,--binary))
+endif
+
 $(eval $(call gb_UnpackedTarball_add_patches,breakpad,\
 	external/breakpad/breakpad-use-correct-http-header.patch.1 \
 	external/breakpad/breakpad-wshadow.patch.1 \
diff --git a/external/coinmp/UnpackedTarball_coinmp.mk b/external/coinmp/UnpackedTarball_coinmp.mk
index 83ebfca80193..20cf9184516e 100644
--- a/external/coinmp/UnpackedTarball_coinmp.mk
+++ b/external/coinmp/UnpackedTarball_coinmp.mk
@@ -29,6 +29,11 @@ $(eval $(call gb_UnpackedTarball_update_autoconf_configs,coinmp,\
 	Osi \
 ))
 
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,coinmp,--binary))
+endif
+
 # * external/coinmp/Wnon-c-typedef-for-linkage.patch upstream at
 #   <https://list.coin-or.org/pipermail/coin-discuss/2020-February/003972.html> "[Coin-discuss]
 #   Small patch to fix Clang -Wnon-c-typedef-for-linkage in Clp":
diff --git a/external/lcms2/UnpackedTarball_lcms2.mk b/external/lcms2/UnpackedTarball_lcms2.mk
index 745da1a0a782..f44683e03809 100644
--- a/external/lcms2/UnpackedTarball_lcms2.mk
+++ b/external/lcms2/UnpackedTarball_lcms2.mk
@@ -15,6 +15,11 @@ $(eval $(call gb_UnpackedTarball_update_autoconf_configs,lcms2))
 
 $(eval $(call gb_UnpackedTarball_set_patchlevel,lcms2,3))
 
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,lcms2,--binary))
+endif
+
 # external/lcms2/0001-Added-missing-export.patch.1:
 # backport of https://github.com/mm2/Little-CMS/commit/f7b3c637c20508655f8b49935a4b556d52937b69
 $(eval $(call gb_UnpackedTarball_add_patches,lcms2,\
diff --git a/external/libtommath/UnpackedTarball_libtommath.mk b/external/libtommath/UnpackedTarball_libtommath.mk
index 8961a46162c5..6d8e1e9fdd57 100644
--- a/external/libtommath/UnpackedTarball_libtommath.mk
+++ b/external/libtommath/UnpackedTarball_libtommath.mk
@@ -13,6 +13,11 @@ $(eval $(call gb_UnpackedTarball_set_tarball,libtommath,$(LIBTOMMATH_TARBALL)))
 
 $(eval $(call gb_UnpackedTarball_set_patchlevel,libtommath,0))
 
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,libtommath,--binary))
+endif
+
 $(eval $(call gb_UnpackedTarball_add_patches,libtommath,\
 ))
 
diff --git a/external/python3/UnpackedTarball_python3.mk b/external/python3/UnpackedTarball_python3.mk
index 6eaa4ca82784..cbb85e14e405 100644
--- a/external/python3/UnpackedTarball_python3.mk
+++ b/external/python3/UnpackedTarball_python3.mk
@@ -16,6 +16,11 @@ $(eval $(call gb_UnpackedTarball_fix_end_of_line,python3,\
 	PCbuild/pcbuild.sln \
 ))
 
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,python3,--binary))
+endif
+
 $(eval $(call gb_UnpackedTarball_add_patches,python3,\
 	external/python3/i100492-freebsd.patch.1 \
 	external/python3/python-3.3.0-darwin.patch.1 \
diff --git a/external/skia/UnpackedTarball_skia.mk b/external/skia/UnpackedTarball_skia.mk
index 9e603dcb28dd..683de8e9d69c 100644
--- a/external/skia/UnpackedTarball_skia.mk
+++ b/external/skia/UnpackedTarball_skia.mk
@@ -45,6 +45,11 @@ skia_patches := \
 
 $(eval $(call gb_UnpackedTarball_set_patchlevel,skia,1))
 
+ifneq ($(MSYSTEM),)
+# use binary flag so patch from git-bash won't choke on mixed line-endings in patches
+$(eval $(call gb_UnpackedTarball_set_patchflags,skia,--binary))
+endif
+
 $(eval $(call gb_UnpackedTarball_add_patches,skia,\
     $(foreach patch,$(skia_patches),external/skia/$(patch)) \
 ))