Default timeout value for git operations is 10 mins, which can be modified on a per job basis.

Having set up many jobs, our repo history has outgrown the 10 minute limit, so many jobs now fail due to timeout.

Either I should be able to change all jobs using configuration slicing, or I should be able to change the default behaviour of the plugin.

There is a workaround to set the timeout in the JAVA_ARGS/JAVA_OPTS for the jenkins service start script, and for each slave in the slave configuration, but these make our jenkins server non-portable, which is a requirement.