only checkout the target branch when topgit is used

Dependencies

• [2] 6LRC7SIE forcing branch switch
• [3] 6STC76Q6 added clean command
• [4] JAH3UPWA Support revision control systems via plugins
• [5] 3BTJRSU3 GitInput.pm: Don't do a chdir to the Git clone

Change contents

• replacement in src/lib/Hydra/Plugin/GitInput.pm at line 42
  [4.7119]→[4.7119:7173](∅→∅),[4.7173]→[2.0:89](∅→∅),[2.89]→[4.1611:1711](∅→∅),[4.1611]→[4.1611:1711](∅→∅),[4.1711]→[3.0:292](∅→∅)
  − # Checkout the branch to look at its content.

  − $res = run(cmd => ["git", "checkout", "--force", "$branch"], dir => $clonePath);

  − die "error checking out Git branch '$branch' at `$uri':\n$res->{stderr}" if $res->{status};

  − # Clean to remove potentially present artifacts after forcing branch switch

  − $res = run(cmd => ["git", "clean", "-d", "-x", "--force", "--force"], dir => $clonePath);

  − print STDERR "warning: `git clean -d -x --force --force' failed::\n$res->{stderr}" if $res->{status};
  [4.7119]

  [4.7347]
  + # Is the target branch a topgit branch?

  + $res = run(cmd => ["git", "ls-tree", "-r", "$branch", ".topgit"], dir => $clonePath);
• replacement in src/lib/Hydra/Plugin/GitInput.pm at line 45
  [4.7348]→[4.7348:7377](∅→∅)
  − if (-f ".topdeps") {
  [4.7348]

  [4.7377]
  + if ($res->{stdout} != "") {

  + # Checkout the branch to look at its content.

  + $res = run(cmd => ["git", "checkout", "--force", "$branch"], dir => $clonePath);

  + die "error checking out Git branch '$branch' at `$uri':\n$res->{stderr}" if $res->{status};

  +