test.pp

#!/usr/bin/env puppet

exec {
  "git-mysiterepos":
    path => '/usr/bin:/bin:/usr/local/bin:$PATH',
    cwd => '/tmp',
    creates => '/tmp/feather/.git',
    command => 'git clone git://github.com/fujin/feather.git /tmp/feather';
  "git-update-mysiterepos":
    require => Exec["git-mysiterepos"],
    path => '/usr/bin:/bin:/usr/local/bin:$PATH',
    cwd => '/tmp/feather',
    command => 'git pull';
}

test.pp output

aj@junglist /tmp$ ./test.pp --debug
debug: Creating default schedules
debug: //Exec[git-update-mysiterepos]/require: requires Exec[git-mysiterepos]
debug: //Exec[git-mysiterepos]: Changing returns
debug: //Exec[git-mysiterepos]: 1 change(s)
debug: //Exec[git-mysiterepos]: Executing 'git clone git://github.com/fujin/feather.git /tmp/feather'
debug: Executing 'git clone git://github.com/fujin/feather.git /tmp/feather'
notice: //Exec[git-mysiterepos]/returns: executed successfully
debug: //Exec[git-update-mysiterepos]: Changing returns
debug: //Exec[git-update-mysiterepos]: 1 change(s)
debug: //Exec[git-update-mysiterepos]: Executing 'git pull'
debug: Executing 'git pull'
notice: //Exec[git-update-mysiterepos]/returns: executed successfully
debug: Finishing transaction -612100258 with 2 changes

aj@junglist /tmp$ ./test.pp --debug
debug: Creating default schedules
debug: //Exec[git-update-mysiterepos]/require: requires Exec[git-mysiterepos]
debug: //Exec[git-update-mysiterepos]: Changing returns
debug: //Exec[git-update-mysiterepos]: 1 change(s)
debug: //Exec[git-update-mysiterepos]: Executing 'git pull'
debug: Executing 'git pull'
notice: //Exec[git-update-mysiterepos]/returns: executed successfully
debug: Finishing transaction -611690658 with 1 changes