If you still need and need to do this, I found a way to do this: just create a bash script with execute permissions and tell the daemon to write its materials to one or two files (if you want log stderr separately):
#!/bin/bash
GIT_RO_USER="git-ro"
GIT_REP_BASE_PATH="/path/to/GitRepositories"
GIT_LOG_FILE="/var/log/git.log"
/path/to/git daemon --reuseaddr --verbose --user=$GIT_RO_USER --base-path=$GIT_REP_BASE_PATH $GIT_REP_BASE_PATH >> $GIT_LOG_FILE 2>&1
/path/to/git - git. launchd OS X, , StandardOutPath StandardErrorPath , .plist.
, !