1 files changed, 66 insertions, 0 deletions
diff --git a/options.go b/options.go
index d033654..50fba10 100644
--- a/options.go
+++ b/options.go
@@ -178,6 +178,72 @@ type SubmoduleUpdateOptions struct {
 	RecurseSubmodules SubmoduleRescursivity
 }
 
+// CheckoutOptions describes how a checkout 31operation should be performed.
+type CheckoutOptions struct {
+	// Hash to be checked out, if used HEAD will in detached mode. Branch and
+	// Hash are mutual exclusive.
+	Hash plumbing.Hash
+	// Branch to be checked out, if Branch and Hash are empty is set to `master`.
+	Branch plumbing.ReferenceName
+	// Force, if true when switching branches, proceed even if the index or the
+	// working tree differs from HEAD. This is used to throw away local changes
+	Force bool
+}
+
+// Validate validates the fields and sets the default values.
+func (o *CheckoutOptions) Validate() error {
+	if o.Branch == "" {
+		o.Branch = plumbing.Master
+	}
+
+	return nil
+}
+
+// ResetMode defines the mode of a reset operation.
+type ResetMode int8
+
+const (
+	// HardReset resets the index and working tree. Any changes to tracked files
+	// in the working tree are discarded.
+	HardReset ResetMode = iota
+	// MixedReset resets the index but not the working tree (i.e., the changed
+	// files are preserved but not marked for commit) and reports what has not
+	// been updated. This is the default action.
+	MixedReset
+	// MergeReset resets the index and updates the files in the working tree
+	// that are different between Commit and HEAD, but keeps those which are
+	// different between the index and working tree (i.e. which have changes
+	// which have not been added).
+	//
+	// If a file that is different between Commit and the index has unstaged
+	// changes, reset is aborted.
+	MergeReset
+)
+
+// ResetOptions describes how a reset operation should be performed.
+type ResetOptions struct {
+	// Commit, if commit is pressent set the current branch head (HEAD) to it.
+	Commit plumbing.Hash
+	// Mode, form resets the current branch head to Commit and possibly updates
+	// the index (resetting it to the tree of Commit) and the working tree
+	// depending on Mode. If empty MixedReset is used.
+	Mode ResetMode
+}
+
+// Validate validates the fields and sets the default values.
+func (o *ResetOptions) Validate(r *Repository) error {
+	if o.Commit == plumbing.ZeroHash {
+		ref, err := r.Head()
+		if err != nil {
+			return err
+		}
+
+		o.Commit = ref.Hash()
+	}
+
+	return nil
+}
+
 // LogOptions describes how a log action should be performed.
 type LogOptions struct {
 	// When the From option is set the log will only contain commits