What is the priority regarding git configuration?
Lowest to highest priority:
/etc/gitconfig: system wide, edited when--systemparameter is used~/.gitconfig: user specific configuration, edited when--globalparameter is used.git/config: repository specific configuration
From the Git manual (read http://git-scm.com/docs/git-config#FILES)
If not set explicitly with --file, there are four files where git config will search for configuration options:
$(prefix)/etc/gitconfig
System-wide configuration file.
$XDG_CONFIG_HOME/git/config
Second user-specific configuration file. If $XDG_CONFIG_HOME is not set or empty, $HOME/.config/git/config will be used. Any single-valued variable set in this file will be overwritten by whatever is in ~/.gitconfig. It is a good idea not to create this file if you sometimes use older versions of Git, as support for this file was added fairly recently.
~/.gitconfig
User-specific configuration file. Also called "global" configuration file.
$GIT_DIR/config
Repository specific configuration file.
If no further options are given, all reading options will read all of these files that are available. If the global or the system-wide configuration file are not available they will be ignored. If the repository configuration file is not available or readable, git config will exit with a non-zero error code. However, in neither case will an error message be issued.
The files are read in the order given above, with last value found taking precedence over values read earlier. When multiple values are taken then all values of a key from all files will be used.