Add config for auto-forwarding branches after fetching

pkg/commands/git_commands/branch.go

@@ -285,3 +285,11 @@ func (self *BranchCommands) IsBranchMerged(branch *models.Branch, mainBranches *
 
 	return stdout == "", nil
 }
+
+func (self *BranchCommands) UpdateBranchRefs(updateCommands string) error {
+	cmdArgs := NewGitCmd("update-ref").
+		Arg("--stdin").
+		ToArgv()
+
+	return self.cmd.New(cmdArgs).SetStdin(updateCommands).Run()
+}

pkg/commands/oscommands/cmd_obj.go

@@ -21,6 +21,9 @@ type ICmdObj interface {
 	// outputs args vector e.g. ["git", "commit", "-m", "my message"]
 	Args() []string
 
+	// Set a string to be used as stdin for the command.
+	SetStdin(input string) ICmdObj
+
 	AddEnvVars(...string) ICmdObj
 	GetEnvVars() []string
 
@@ -131,6 +134,12 @@ func (self *CmdObj) Args() []string {
 	return self.cmd.Args
 }
 
+func (self *CmdObj) SetStdin(input string) ICmdObj {
+	self.cmd.Stdin = strings.NewReader(input)
+
+	return self
+}
+
 func (self *CmdObj) AddEnvVars(vars ...string) ICmdObj {
 	self.cmd.Env = append(self.cmd.Env, vars...)