src/vs/workbench/contrib/scm/common/scmService.ts/SCMInput/showNextHistoryValue
class SCMInput:	showNextHistoryValue(): void {
		if (this.historyNavigator.isAtEnd()) {
			return;
		} else if (!this.historyNavigator.has(this.value)) {
			this.historyNavigator.replaceLast(this._value);
			this.historyNavigator.resetCursor();
		}

		const value = this.historyNavigator.next();
		this.setValue(value, true, SCMInputChangeReason.HistoryNext);
	}