The uwtwrapper script does not handle symlinks properly.
For example, git installs two symlinks at /usr/bin/git-receive-pack and /usr/bin/git-upload-archive that point to /usr/bin/git. I'm not well versed in bash, but I think that $uwtwrapper_parent is incorrectly set to the symlink, rather than what the symlink points to. The script then tries to run /usr/bin/git-receive-pack.anondist-orig, rather than /usr/bin/git.anondist-orig. This causes the following error.
uwtwrapper uwt wrapper ERROR: /usr/bin/git-receive-pack.anondist-orig does not exist.