User management and pairing for Git
First, add some users:
$ git su --add 'Raphe Rackstraw <rrack@example.com>'
User 'Raphe Rackstraw <rrack@example.com>' added to users
$ git su --add 'Joseph Porter KCB <joe@example.com>'
User 'Joseph Porter KCB <joe@example.com>' added to users
Then, switch to them:
$ git su joe rack
Switched local user to 'Joseph Porter KCB and Raphe Rackstraw <dev+joe+rrack@example.com>'
If you need to switch to more than two users at once:
$ git su --add 'Josephine Corcoran <jc@example.com>'
User 'Josephine Corcoran <jc@example.com>' added to users
$ git su joe rack jc
Switched local user to 'Joseph Porter KCB, Josephine Corcoran and Raphe Rackstraw <dev+joe+jc+rrack@example.com>'
You can change the group email that Gitsu uses when combining your users' email addresses, via a config entry
$ git config --global gitsu.groupEmailAddress 'web@example.org'
$ git su rack jc
Switched local user to 'Josephine Corcoran and Raphe Rackstraw <web+joe+jc+rrack@example.org>'