DOSEMU uses Git for source code management. As of 2 November 2012 the old Subversion repository is taken off-line and will not be changed any more, but the Subversion history is preserved in the Git repository.
The current development sources can be checked out using the following command:
git clone git://git.code.sf.net/p/dosemu/code dosemu
or
git clone http://git.code.sf.net/p/dosemu/code dosemu
You can also browse the repository via
http://sourceforge.net/p/dosemu/code