Debian 9, if git is not installed the buildtools throw an exception

Exception in thread "main" java.io.IOException: Cannot run program "git" (in directory "."): error=2, No such file or directory
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1048)
at org.spigotmc.builder.Builder.runProcess0(Builder.java:755)
at org.spigotmc.builder.Builder.runProcess(Builder.java:699)
at org.spigotmc.builder.Builder.main(Builder.java:200)
at org.spigotmc.builder.Bootstrap.main(Bootstrap.java:40)
Caused by: java.io.IOException: error=2, No such file or directory
at java.lang.UNIXProcess.forkAndExec(Native Method)
at java.lang.UNIXProcess.<init>(UNIXProcess.java:247)
at java.lang.ProcessImpl.start(ProcessImpl.java:134)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1029)