+sub cmd_checkout {
+ parseopts();
+ package_from_d_control();
+ @ARGV==1 or badusage "dgit checkout needs a suite argument";
+ ($isuite) = @ARGV;
+ notpushing();
+
+ foreach my $canon (qw(0 1)) {
+ if (!$canon) {
+ $csuite= $isuite;
+ } else {
+ undef $csuite;
+ canonicalise_suite();
+ }
+ if (length git_get_ref lref()) {
+ # local branch already exists, yay
+ last;
+ }
+ if (!length git_get_ref lrref()) {
+ if (!$canon) {
+ # nope
+ next;
+ }
+ dofetch();
+ }
+ # now lrref exists
+ runcmd (@git, qw(update-ref), lref(), lrref(), '');
+ last;
+ }
+ local $ENV{GIT_REFLOG_ACTION} = git_reflog_action_msg
+ "dgit checkout $isuite";
+ runcmd (@git, qw(checkout), lref());
+}
+