Use a specific commit

debian/resources/switch/source-release.sh

@@ -69,6 +69,7 @@ if [ $(echo "$switch_version" | tr -d '.') -gt 1100 ]; then
 	cd /usr/src
 	git clone https://github.com/freeswitch/spandsp.git spandsp
 	cd spandsp
+ 	git reset --hard 0d2e6ac65e0e8f53d652665a743015a88bf048d4
  	/usr/bin/sed -i 's/AC_PREREQ(\[2\.71\])/AC_PREREQ([2.69])/g' /usr/src/spandsp/configure.ac
 	sh autogen.sh
 	./configure